A resource aimed at GCSE (14-16 year old) students on the topic of cell magnification and cell division. The resource consists of a worksheet with questions that cover units of measurement conversion, recognising structures in cells from actual light micrograph images, calculation of magnification and defining the words 'gene' and 'chromosome'.

A resource aimed at GCSE (14-16 year old) biology students, this resource consists of a series of instructions for four food test investigations (testing for a reducing sugar, protein, starch and fat), each of which can be printed out and positioned at various locations/work stations in a laboratory. The resource also contains a worksheet for students to fill in as they complete each investigation - students should test a known sample of a food substance first in order to see for themselves the positive result/colour change before then testing an unknown mixture.

A resource aimed at GCSE (14-16 year old) biology students, this worksheet provides a labelling task for animal and plant cells as viewed down the light microscope along with mix and match task relating to the function of each organelle. The task also includes some extension questions on the nature of mitochondria for students to research (perhaps as a homework exercise). The resource is tailored to the Hodder AQA 9-1 Biology textbook but the page references in the worksheet could easily be adapted to any other textbook reference.

A resource aimed at GCSE (14-16 year old) students and tailored specifically for AQA specifications, this crossword provides 16 crossword clues that relate to key vocabulary covered in the topic of mitosis (e.g. cytokinesis, interphase, centromere, chromosome, etc). This resource is ideal for students to practice using key vocabulary and can be used as either a starter or plenary task in lessons. An answer key is provided on the second page. Key words: Mitosis, interphase, cytokinesis, chromosome, division, nucleus, paternal, maternal, gene, cancer, asexual, growth, repair, centromere, clone, identical

An original Christmas science investigation that requires minimal preparation of resources and is ideal for that final lesson before the Christmas holiday/vacation begins! In this investigation, students are asked to stare at an image relating to Christmas. Some examples are provided in the resource (e.g. holly, santa, christmas tree baubles, etc) but you could supplement these with your own if desired. Gradually, light sensitive cones in the retina of the eye become fatigued causing the appearance of a ghostly afterimage in the field of view for a few seconds/minutes afterwards. Quite literally, students will see the apparition of a giant christmas image everywhere they look! The investigation requires students to take it in turns varying the length of time they are exposed to the image and determine the effect this has on the time foor the afterimage to remain. Follow up optional extension questions require students to explain the reason for the colour of the afterimage. The activity would best be delivered to either high ability GCSE biology students or advanced level biology students with some prior discussion on the trichromatic theory of colour vision.

A resource aimed at BTEC Level 3 Applied Science students, this worksheet provides a series of research prompts for students to explore the nature of a scientific theory. The context of the theory of evolution is used in this task, with students being required to research the evidence for this theory and some of the competing and discredited ideas that were believed (and still are by some individuals) until the evidence for evolution by natural selection became overwhelming.

A questionnaire that can be given to students as part of a homework or research task on the subject of MMR vaccinations. The questions are thought provoking and force students to think about how they would act in the situation of getting their own children vaccinated. This activity works well as a starter activity to ignite debate - particularly when students are tasked with using this questionnaire on members of their own family and reporting the results back to class.

An activity aimed at either advanced level biology students or level 3 BTEC applied science students, this resource provides a nice, quick and simple activity that illustrates the primary, secondary, tertiary and quaternary structure of proteins - using nothing more than paper and sellotape! This activity provides a way in which students can see the three dimensional structure of protein for themselves - once the activity is completed, the teacher can then display ribbon diagrams of proteins (e.g. enzymes, haemoglobin, etc) so that students can see the connection between textbook diagrams and images and their model.

An unusual resource that brings history and science together with an activity that introduces the concept of carbon-14 radioactive dating of archeological remains. The task provides an introduction to radioactive dating, followed by questions whereby students are required to calculate percentage reduction of carbon-14 . Finally, students can then calculate the approximate year when Richard III died based on the half life of carbon-14.

A resource aimed at Level 3 Applied Science students, this worksheet provides a series of research prompts to guide students to independently learn about the technique of electrophoresis. The worksheet includes clear questions, a weblink for further information and information on how the work will be assessed. The second worksheet included with this resource provides a marking grid that can be used as part of a peer assessment exercise, with students assessing and grading each other's work depending on which criteria have been met and the quality of the work produced.

A single page method sheet for carrying out the reducing sugar and non-reducing sugar test. This resource would be suitable as a concise guide to the these biochemical tests and is aimed at Advanced Level biology students or BTEC Level 3 students.

An activity aimed at GCSE or A-Level biology (age 14-18) students on the topic of intensive rearing of livestock. The activity includes a powerpoint presentation and a questionnaire word document. The powerpoint can be printed out on separate sheets of A4 and posted around the classroom for students to find - each slide has a suitable image together with either explanatory text or thought provoking image. The questionnaire matches the slides and so students can then match the answer to the relevant question. In terms of delivery, students can be paired up after they complete the activity and asked to verbally test each other on their knowledge of intensive rearing, checking that the information gathered has been understood. This can then lead into a whole class teacher-led discussion using the powerpoint slides to summarise the topic and check responses to each question. The activity includes coverage of the reasons for intensive rearing, the ways in which energy efficiency is increased, the use of growth hormone, use of antibiotics, antibiotic resistance and various ethical issues.

An activity aimed at either 7-10 year olds (simply do the activity described on the first two pages and ask students to describe their observations) or 11-14 year old students(ask students to complete the worksheet of questions on diffusion), this resource provides a really engaging way of of showing students the phenomenon of diffusion in a quick, simple, creative and edible way! Students are tasked with creating a simple picture or image on a plate using vegetable oil and a drinking straw. Skittle sweets/candy are then added to each area of the image and water is added. The colours from the skittle sweets/candy will start to diffuse and spread across the plate, colouring the image in. The colours are prevented from running into each other by the lines of oil. The activity provides a great way of discussing key questions such as why the colours are spreading, why are some colours spreading faster than others, what effect different temperature water has on the rate of spread of the colour and why oil stops the colours from spreading any further. Most importantly though, the investigation is a FUN science activity tailored to Christmas! The resource includes: Instruction sheet with diagrams, question worksheet for 11-14 year olds and various templates designs for Christmas pictures Key words: diffusion, colour, art, christmas, santa, holly, reindeer, fun, skittles, spread, investigation

A mark scheme posted in response to a request from a customer that purchased the nitrogen cycle worksheet: https://www.tes.com/teaching-resource/nitrogen-cycle-11285758

A resource aimed at Advanced Level Biology students, this practical schedule provides a fully detailed method by which students can investigate the effect of pH on the rate at which hydrogen peroxide is broken down by catalase. The experiment itself is straightforward to set up and the data gathered from the investigation can be analysed to produce the classic pH versus rate of reaction graph. The schedule includes several exam style questions based on student's understanding of the practical exercise as well as a mark scheme with answers. Key words: catalase, rate, enzyme, pH, buffer, hydrogen peroxide

An activity aimed at GCSE biology (age 14-16) students on the topic of stem cells. The activity includes a powerpoint presentation and a questionnaire word document. The powerpoint can be printed out on separate sheets of A4 and posted around the classroom for students to find - each slide has a suitable image together with clear explanatory text. The questionnaire matches the slides and so students can then match the answer to the relevant question. In terms of delivery, students can be paired up after they complete the activity and asked to verbally test each other on their knowledge of stem cells, checking that the information gathered has been understood. This can then lead into a whole class teacher-led discussion using the powerpoint slides to summarise the topic and check responses to each question. The activity includes coverage of the nature of stem cells, embryonic versus adult stem cells, IVF, uses of stem cells, ethical issues, tissue culture and medical treatments that are possible using stem cell therapy.

A resource aimed at applied science/health and social care or medical physics students (either level 2 or 3) that provides a vocational discussion on how radiopharmaceuticals are used in the treatment and diagnosis of illnesses. The worksheet contains twelve questions that students are required to answer while the video plays (link to youtube video is provided on the worksheet). This is best used as a starter activity for this topic and as a prompt for further discussion. Asking students to answer questions while they watch the video helps to ensure that they are actively engaged and that they have a record of the information in their notes afterwards. Key words: radiopharmaceuticals, isotopes, cancer, radiotherapy, imaging, gamma, beta, alpha, radiation