Measuring sizes of hands and presenting data Designers must consider how people will interact with their products and systems. The use of ergonomics and anthropometric data allows them to make sure their products are comfortable and efficient to use. This resource focuses on ergonomics in GCSE DT and the use of anthropometric data. Activity info, teachers’ notes and curriculum links An engaging KS4 activity in which students will collect data relating to the hand sizes of different people for use in designing a shopping bag carrier. It will build knowledge and understanding of how ergonomics and anthropometric data and anthropometric measurements are gathered for use in product design. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Linking to key exam boards such as GCSE DT providers AQA and Edexcel. Download the activity sheets for free! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. And please do share your classroom learning highlights with us @IETeducation

Testing the operation of pulley systems and calculating their mechanical advantage This GCSE maths resource looks at how pulleys work and is fully-curriculum linked. Download the resource for free to teach KS4 pulleys to your class. What are the advantages of a pulley system? Mechanical systems allow us to perform tasks that would otherwise be very difficult, enabling us to lift objects that would otherwise be far too heavy to move. For example, cranes on building sites that move heavy materials. This GCSE mathematics resource focuses on testing pulley systems and calculating their mechanical advantage. Activity info, teachers’ notes and curriculum links An engaging activity in which students will will test and calculate the mechanical advantage of three different examples of simple pulley systems designed to lift loads. It will build knowledge and understanding of how pulley systems work, along with improving related numeracy skills. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Download the activity sheets for free! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. And please do share your classroom learning highlights with us @IETeducation

Model and construct 3 simple pulley systems, designed to lift loads Mechanical systems allow us to perform tasks that would otherwise be very difficult, such as pulley systems that lift objects that would otherwise be far too heavy to move. For example, cranes on building sites that move heavy materials. This KS4 maths resource focuses on the use and application of pulley systems. Activity info, teachers’ notes and curriculum links An engaging activity in which students will model and construct three different examples of pulley systems designed to lift loads. It will build knowledge and understanding of how pulley systems work and their practical uses. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Download the free activity sheet! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. And please do share your classroom learning highlights with us @IETeducation

Make a working prototype of a treadle pump that is designed to help people living in remote villages source water. Learners will create a functional and fully operational prototype of a treadle pump designed to lift water from wells in this task. This project aims to enhance their ability to effectively design products that address social needs. It will also improve their manufacturing skills and capacity to choose suitable materials, tools, and equipment. This activity can be utilised as the final part of a four-lesson unit, following the activities “Investigating Problems Faced by People in Remote Areas,” “Methods of Obtaining Water,” and “Card Modelling of a Treadle Pump.” Alternatively, it can be used as a standalone main lesson to provide comprehensive knowledge and understanding of the subject matter. How long will this activity take? This activity will take approximately 60-120 minutes to complete. Download the activity sheet below for a full lesson plan. The engineering context Integrating social issues into the design process holds significant importance in all GCSE Design and Technology 9-1 courses, as well as the GCSE Engineering 9-1 course. Students are obligated to learn about this crucial aspect. Furthermore, they must also learn about carefully selecting and utilising materials, tools, and equipment to create prototypes. The knowledge acquired through these courses can extend beyond the classroom, finding practical applications in the future when designing and producing products to meet the social needs of individuals and communities. Suggested learning outcomes By the end of this activity, students will be able to manufacture a working prototype of a treadle pump for people living in a remote village, they will be able to select appropriate materials, tools and equipment for the activity, and they will be able to understand the use and application of wasting, joining, forming and finishing techniques. Download the free activity sheet! All activity sheets and supporting resources are free to download, and all the documents are fully editable so that you can tailor them to your students and your schools’ needs. The activity sheet includes teacher notes, guidance, helpful web links, and links (where appropriate) to the national curriculum in the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Please share your classroom learning highlights with us @IETeducation

Design a treadle pump This is one of a series of GCSE DT resources designed to support teachers to deliver high-quality, inspiring lessons. Each resource covers a key topic from one or more of the specifications for these subjects. This resource focuses on designing ideas to solve the problem of water supply faced by people living in remote villages. One challenge that many people living in dry, remote areas face is the sourcing of water to irrigate crops and therefore grow food. A treadle pump can be used to make this much easier and far less time consuming. Activity info, teachers’ notes and curriculum links How does a water pump work? In this activity, learners will produce design ideas for a treadle pump that can raise water from wells. It will develop their ability to design products that meet a social need. It will also develop their skills in the drawing techniques used by designers and engineers to communicate their ideas. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Download the activity sheets for free! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. And please do share your classroom learning highlights with us @IETeducation

Craft solutions for clean water and make a proto-type of an idea What is a treadle pump and how does it work? This is one of a series of resources designed to support the delivery of DT at secondary, using Design & Technology and Engineering. Each resource covers a key topic from one or more of the specifications for these subjects. This resource focuses on the social problems and challenges faced by people living in remote parts of the world, and allows students to craft solutions to these issues. Millions of people live in remote parts of the world. They face many challenges, such as limited access to electricity and difficulties in sourcing food and water. Activity info, teachers’ notes and curriculum links In this activity, secondary learners will investigate some of the problems faced by people living in remote areas, and how they might be solved. It will build their knowledge of social issues and how this affects the design of products and systems. The DT KS4 activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Download the activity sheets for free! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. And please do share your classroom learning highlights with us @IETeducation

Role play about the advantages and disadvantages of nuclear energy As we rely so heavily on electrical energy in our lives, it’s crucial for students to understand the processes and implications of its generation. Our role play activity will engage the whole classroom through debate, where participants will discuss the advantages and disadvantages of generating electrical energy using nuclear fuel. This is one of a set of resources developed to aid the teaching of the secondary national curriculum, particularly KS3. It has been designed to support the delivery of key topics within engineering and design and technology (DT). Activity: Role play about the advantages and disadvantages of nuclear energy In this activity, learners learn about nuclear energy and then assume various roles to discuss and debate a proposal to construct a new nuclear power station in their local area. Learners will review how nuclear power is generated and then weigh its pros and cons. By executing a group role play, students will gain a deeper understanding of the topic. The activity concludes with class feedback, where learners justify their decisions, promoting reflective thinking. Download our activity overview and presentation for a detailed lesson plan for teaching students about nuclear energy. The engineering context Engineering is all about problem-solving and making informed decisions. By debating the construction of a new nuclear power station, students will get a glimpse into the challenges engineers face daily. This activity will inspire them to think like engineers, weighing the pros and cons before making decisions that impact society. Suggested learning outcomes This activity is designed to help students grasp how electrical energy is generated from nuclear fuel and comprehend both the benefits and drawbacks of this method. Furthermore, it encourages learners to apply their knowledge to real-world situations, enhancing their understanding of the issues surrounding electrical energy generation. Download our activity sheets for free! The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales. All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. You can download our classroom lesson plan and our PowerPoint presentation. Please do share your highlights with us @IETeducation

An activity for GCSE students to design a levitating hoverboard that works using magnetism 1980s films predicted that by 2015 people using hoverboards would be a very common sight, but only now is the technology finally reaching the point where it can become a reality. Students will combine their creative prowess with scientific principles as they tackle the challenge of designing a functional hoverboard that defies gravity through the power of magnetism. This hands-on experience will not only push the boundaries of students’ creativity but also empower them to apply scientific theory in a tangible and captivating way. Activity introduction This activity is one of a series of free resources designed to support the delivery of the new 9-1 GCSEs in Design & Technology, and Engineering. Each resource covers a key topic from one or more of the specifications for these subjects. This resource focuses on designing a hoverboard that uses magnetism and magnetic fields. Students will need to design a hoverboard for teenagers that can move forward without touching the ground. The product should use a suitable method of keeping the board in the air, such as magnetism. Learners should draw on their scientific knowledge of magnetism and magnetic fields and focus on applying this in an engineering/design context. Magnetism is a fundamental scientific phenomenon. Utilising this has allowed designers to create new and innovative products, such as fully working MAGLEV trains and hoverboards. The engineering context Utilising scientific principles for product design constitutes a significant component within the new GCSE curriculum for Design & Technology and Engineering. The insights acquired from this approach can also be harnessed while leveraging magnetic forces and other associated scientific phenomena to bolster the conceptualisation of upcoming products. Suggested learning outcomes Upon completion of this task, students will have the capacity to create a functional levitating hoverboard by applying scientific principles to product design. Additionally, they will be able to effectively convey design concepts using sketches, written notes, and annotations. Download our activity sheets for free! The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales. All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. Please do share your highlights with us @IETeducation.

An engaging activity in which students will analyse and investigate how hoverboards work. They will consider the science and technology behind how they are able to levitate, the main features of each design and what that could be improved.

In this pulleys A Level maths resource, you examine forces in equilibrium in a hands-on activity and explore A Level maths. Can you use your knowledge of mechanics to predict the mass of the unknown object? Do the ks5 calculations and then check your predictions. This practical is designed to be easily set up and carried out in an A Level maths classroom using simple equipment. It will help students to understand the mechanics topics of forces and Newton’s laws in A level Mathematics. It is covered in KS5 AQA A Level maths and Edexcel A Level maths curricula. The pulleys video features the equipment needed and the practical procedure. The teacher notes contain additional guidance on carrying out the activity, sample calculations and suggested points for discussion, as well as an indication of some relevant real-life applications. Download the activity sheets for free! And please do share your classroom learning highlights with us @IETeducation as you find more A Level maths resources and A Level maths lesson plans from the IET.

Calculate tension force using pulleys In this practical activity two objects are connected via a string that passes over a pulley; then they are released from rest. Participants are tasked to use their knowledge of mechanics to predict the time taken for the heavier object to fall to the ground and the greatest height reached by the lighter object? Once each participant has made their calculations, complete the experiments, and compare to the predictions. This practical is designed to be easily set up and carried out in a maths classroom using simple equipment. It will help students to understand the mechanics topic of kinematics and constant acceleration equations in AS and A level Mathematics. The video features the equipment needed and the practical procedure. The teacher notes contain additional guidance on carrying out the activity, sample calculations and suggested points for discussion, as well as an indication of some relevant real-life applications. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland, and Wales. All activity sheets and supporting resources are free to download and are fully editable, so you can tailor them to your students’ and your schools’ needs. Links to stream and download the videos can be found resources section below. Tools/resources required: Board 2 cup hooks 2 washing line pulleys Long piece of string with 3 loops in it 3 different masses, e.g. different coloured plasticine Pencil Ruler Tape measure/plumb line Protractor Kitchen scales Sticky tape And please do share your classroom learning highlights with us @IETeducation To watch a video about pulleys, please visit the IET Education website.

Find out about the carbon cycle and what Land Rover BAR are doing to be as sustainable as possible This STEM activity looks at the meaning of sustainability and how the team at Land Rover BAR use material technology, design and engineering to ensure that every aspect of the team’s operation is fit for use, designed for purpose and is as sustainable as possible. Activity sheets are used to support and ensure students’ understanding of sustainability and the importance of design and technology when achieving sustainability goals within sport. This chemistry exercise covers the meaning of the term sustainability and what this means in terms of the carbon cycle. Watch our film below and hear how sustainability experts at Land Rover BAR work to make every aspect of the team’s operations sustainable. After you have watched our film, complete our worksheets to find out about the carbon cycle and what Land Rover BAR are doing to be as sustainable as possible! The engineering context Sustainable engineering is the process of designing systems in such a way that they use energy and resources sustainably. Sustainable engineers make a huge impact on society. The carbon cycle refers to the process where carbon dioxide travels from the atmosphere into the Earth and then back into the atmosphere. Most carbon is stored in rocks and sediments, while the rest can be found in the ocean, atmosphere and living organisms. Land Rover BAR Land Rover BAR is the British Challenger for the 35th America’s Cup – the oldest international sporting competition in the world. There are only six crew on the race boat, but dozens of experts are back at the team base working hard to help Land Rover BAR design the most technically advanced and innovative racing catamaran to win the America’s Cup. The Land Rover BAR team also aims to be as sustainable as possible. They monitor how they create carbon emissions that add to global warming and find ways to reduce these emissions. Please share your classroom learning highlights with us @IETeducation

Throughout this engaging activity designed for GCSE students, learners will face intriguing challenges that revolve around wind turbines, where their problem-solving skills will be tested using equations and systematic listing techniques. By applying mathematical principles and systematic approaches, learners will uncover the secrets behind these sustainable energy marvels and gain a deeper appreciation for their significance in today’s world. It is recommended to utilise a table format for displaying the values learners substitute into the equation, along with the corresponding outcomes, indicating whether they are too large or too small. Problem Solving Students will likely employ trial and improvement or a graphical method to tackle the first question. Some may also opt to utilise a spreadsheet for their calculations. To ensure the accuracy of their solutions up to two decimal places, they are encouraged to consider using a number line, which can aid in the verification process. As for the final problem, students will need to adopt a systematic listing approach or explore other methodologies to ensure that every possible combination of gears has been thoroughly explored and tested. This activity aims to empower students to approach challenges creatively and thoughtfully by providing various problem-solving techniques and strategies. This process will sharpen their mathematical abilities and cultivate critical thinking skills, enabling them to tackle complex problems with confidence and precision. Discussion points Promote active discussion among the students regarding the diverse approaches they have employed and how they can ensure the accuracy of their answers up to two decimal places. If students have not chosen the graphical approach to solve the problem, consider demonstrating it to the class. Encourage a comparative analysis of the various methods used to address the subsequent problems and enquire about the students’ strategies to ensure they have explored all potential combinations of gears. Potential GCSE content This activity will cover using trial and improvement to solve an equation, calculations with fractions, ratios and systematic listing. Download the free activity sheet! All activity sheets and supporting resources are free to download, and all the documents are fully editable so that you can tailor them to your students and your schools’ needs. The activity sheet includes teacher notes, guidance, helpful web links, and links (where appropriate) to the national curriculum in the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Please share your classroom learning highlights with us @IETeducation

Calculate the distance from a village to a potential well position In a large semi-desert area, three small villages are to share a new well. Engineers will create the well by drilling down to the water table. But where should the well be placed? Activity info, teachers’ notes and curriculum links An engaging activity in which students will determine the best location for a well between 3 villages. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Download the activity sheets for free! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. The related GeoGebra file for this activity can be view on the geoGebra website And please do share your classroom learning highlights with us @IETeducation

Calculating the angles and lengths of components in a water wheel In this starter activity students will use a water wheel model to determine various angles and lengths. This is one of a set of resources developed to aid the class teaching of the secondary national curriculum, particularly KS3. It has been designed to support the delivery of key topics within mathematics and engineering. Activity: Calculating the angles and lengths of components in a water wheel Students will review our presentation, which explains the structure of a water wheel. Students are tasked with calculating the central angle of the water wheeling by diving 360 degrees by the number of equally spaced spokes. Learners must then find the size of a specified angle and two sides of a shape by identifying familiar shapes within our water wheel diagram (e.g., a type of triangle). Students can approach this in more than one way, using either trigonometry or by sketching a scale drawing. After the lesson is complete, there can be a class discussion on the accuracy and usefulness of both methods. Download our activity overview for an introductory lesson plan on calculating angles and lengths in a water wheel for free. The engineering context Mathematical modelling is often used in manufacturing, construction, and civil engineering, where mathematical shapes and principles are used by engineers to inform design specifications, architectural drawings, and design schematics. Suggested learning outcomes In this activity students will learn about the angle properties of a regular polygon and an isosceles triangle. Learners will use the knowledge of trigonometry to find the length of a side and also be able to draw a scale diagram of a triangle for the purposes of construction. Download our activity sheet and other teaching resources The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales. All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your class’s and your schools’ needs. You can download our classroom lesson plan for free! Please do share your highlights with us @IETeducation

Calculate the cross-sectional areas of different aqueducts to determine which is most effective In this STEM activity students will investigate different aqueduct shapes to determine which is the most efficient design. This is one of a set of resources developed to aid the class teaching of the secondary national curriculum, particularly KS3. It has been designed to support the delivery of key topics within mathematics and engineering. Activity: Calculating the cross-sectional areas of different aqueducts In this lesson, students must calculate the cross-sectional area of various aqueducts to determine which one is most effective in terms of least water lost via evaporation. Using our Aqueduct presentation, learners will be introduced to the engineering behind aqueducts by estimating the volume of water follow through the aqueduct in one second. Students will then calculate the cross-sectional areas of various aqueduct shapes, including rectangles and trapezoids. To do this, learners must apply their understanding trigonometry to find the missing side lengths. Alternatively, students can use this GeoGebra file to calculate the area of the trapezium. Download our activity overview for an introductory lesson plan on trigonometry for free! The engineering context Aqueducts are constructed to carry water across gaps such as valleys or ravines. In modern engineering, the term aqueduct is used for any system of pipes, ditches, canals, tunnels, and other structures used for this purpose. Aqueducts can be used to enable water to be transported to areas where it is in short supply. Suggested learning outcomes In this activity students will apply their knowledge of mathematics such as calculating the area of a rectangle and trapezium or the volume of a cuboid. They will also be able to specifically apply their knowledge of trigonometry. Finally, they’ll learn how to plot graphs using a table of values. Download our activity sheet and other teaching resources The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales. All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your class’s and your schools’ needs. You can download our classroom lesson plan for free!

In this fun GCSE maths activity, students will delve into the exciting world of bicycle speedometers and put their accuracy to the test. By conducting this experiment, learners will better understand how speedometers work and sharpen their mathematical and analytical skills. Download the presentation below and allow the students to read the problem and contemplate how to model the situation mathematically. Some students may need assistance comprehending terms such as “front fork.” Encourage them to ponder the meaning of “ms-1,” such as the number of meters the wheel covers in one second. Furthermore, ask them to consider how they can determine the distance the wheel covers in a single rotation, two, or even 100 rotations. Problem Solving To solve this problem, the students will need to engage in logical thinking to determine the necessary information. One possible approach is to work backwards from the information required to answer the question (as shown below). We need the distance travelled (m) and the time taken (s) to calculate the speed. Given that the time is 1 minute, equal to 60 seconds, the question becomes: How can we find the distance? The wheel covers 0.5π meters per rotation, so for n rotations, the distance will be 0.5π x n. Consequently, the speed in ms-1 can be expressed as (0.5π x n)/60. The students can determine the percentage errors using this information and the speedometer readings. These errors vary slightly for each reading. Discussion points Examine how the students approached the problem, specifically analysing their thought processes. How did they determine the necessary information and identify ways to obtain it? You can review concepts such as calculating the circumference of a circle, working with percentages, rounding numbers, and ensuring precision. Potential GCSE content This activity will cover calculating the circumference of a circle from a radius, using compound measures (speed) and converting from minutes to seconds. Download the activity sheets below! All activity sheets and supporting resources are free to download, and all the documents are fully editable so that you can tailor them to your students and your schools’ needs. The activity sheet includes teacher notes, guidance, helpful web links, and links (where appropriate) to the national curriculum in the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Please share your classroom learning highlights with us @IETeducation

Reading and interpreting wave patterns in a graph Engineers sometimes have to analyse data which shows a repeating pattern. Plotting a graph of the data is often helpful as it shows a picture of the pattern. This pattern may sometimes go on and on in a sequence. In this activity, students will learn about the concept of repeated graphical patterns. Inspired by wave patterns, this lesson plan will offer a practical way for students to learn about reading, interpreting graphs as well as sequences. It will explore the periodic nature of these wave patterns, identifying maximum and minimum values, and looking for symmetrical properties. This is one of a set of resources developed to aid the teaching of the secondary national curriculum, particularly KS3. It has been designed to support the delivery of key topics within mathematics. Activity: Interpreting wave patterns in a graph Students will start by reading the slides and answering questions on the first slide in pairs or small groups. They’ll delve into the world of wave patterns, discussing points like maximum and minimum values, the frequency of the pattern repetition, and the location of symmetry. The second slide will challenge them further by asking them to predict the shape of the pattern at various points based on its period. Download our activity overview and presentation for a detailed lesson plan for teaching students about how to interpreted wave patterns in a graph. The engineering context Many fields of engineering, such as signal processing, acoustics, and telecommunications, heavily rely on understanding wave patterns and their properties. By exploring these concepts in a fun and engaging way, students will see how engineers use mathematical concepts like these to create innovative solutions and products. Suggested learning outcomes Upon completion of this activity, students are expected to have a deeper understanding of reading and interpreting graphs, particularly wave patterns. They will learn how to identify maximum and minimum values, understand the concept of the period of a function, and recognise lines of symmetry. Furthermore, they’ll develop problem-solving skills as they use these concepts to predict sequences and future points in the pattern. Download our activity sheet and other teaching resources for free The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales. All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. Download our classroom lesson plan, presentation and handout. Please do share your highlights with us @IETeducation

Queuing theory is a mathematical discipline that helps us understand the behaviour of queues and make predictions about their performance. It considers various factors such as arrival rates, service times, and queue lengths to analyse and optimise queuing systems. By applying queuing theory principles, students will learn how to evaluate different queues and determine which will likely offer a shorter waiting time. Through this activity, you will develop your analytical and problem-solving skills and gain a deeper understanding of queuing theory concepts. You will also learn how to apply these principles in real-life situations, making you a proficient queue navigator in the future! Activity In this activity, students will be presented with two different systems of queues. They should think about the benefits and problems with each system. Encourage the students to think about how they can compare the two systems. What figures could they calculate? What diagrams would help to provide a picture of the advantages and disadvantages of each system? Give the students time to find/calculate their figures and then ask them to present their case. This task provides an opportunity to discuss the most appropriate average. The mean time for the first system is affected by longer wait times for a few customers. Would the mode time be a better average, as this is the most frequent experience, or is the median better? The engineering context Queuing theory is an area of maths which has many applications. When you log onto the internet, you join a queue for a server. Computer engineers and systems designers study queues to help them make systems work more efficiently. Civil engineers use it for traffic lights, and retailers use queuing theory to reduce wait time. Potential GCSE content In this activity, students will learn how to determine the mean and calculate the median from a frequency table, compare two data sets using an average and measure of spread and find the quartiles and the interquartile range (IQR). This exercise will also cover statistical diagrams, reasoning, problem-solving, estimation, and modelling. Download the free activity sheet! All activity sheets and supporting resources are free to download, and all the documents are fully editable so that you can tailor them to your students and your schools’ needs. The activity sheet includes teacher notes, guidance, helpful web links, and links (where appropriate) to the national curriculum in the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Please share your classroom learning highlights with us @IETeducation

Use proportional reasoning to estimate the radius of a circle of light produced by shining a torch at various distances from the wall This is an engaging activity for GCSE students in which learners will estimate the radius of a circle of light produced by shining a torch at various distances from the wall. In order to estimate the radius, students will need to use proportional reasoning or Pythagoras theorem. Students are encouraged to use GeoGebra to gather data. Problem Solving To solve the problem presented on the first slide, students will have to employ proportional reasoning. This can be utilised to reinforce concepts of enlargement, and potentially Pythagoras if the follow-up question is used. For the second problem, students will need to collect data, consider how to manipulate the control variable (distance) and organise the data to aid in identifying any connections between distance and area. Some students may choose to create a graph and extrapolate to determine the distance, while others may seek out a function. The related GeoGebra file for this activity can be viewed at the GeoGebra website. What is GeoGebra? GeoGebra is a free and open-source dynamic mathematics software that allows users to create and manipulate mathematical figures and interact with them in real-time. It can be used to plot graphs, create 3D models, solve equations, and perform complex mathematical operations. It is widely used in education, particularly in the teaching and learning of STEM subjects. GeoGebra is available for use on desktops, tablets, and mobile devices. Potential GCSE content covered By the end of this activity students will have an understanding of Pythagoras’ Theorem, the area of a circle, and enlargement. Download the free Estimate the Radius of a Circle of Light activity sheet below! All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs. The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales. Please share your classroom learning highlights with us @IETeducation