Lesson to build on students understanding of refraction, detailing how to calculate the refractive index of a material - includes practicer questions for students. Ideal for Cambridge iGCSE P7 and more Developing: Recall and use the equation n= Sin(i)/Sin® Securing: Use angles of incidence and refraction to calculate the refractive index of optical media. Exceeding: Apply knowledge to determine the critical angle of different optical media.

Series of lessons designed to build on knowledge of current and voltage. Introducing resistance; Ohm’s Law; rules regarding length, cross sectional area, material and temperature; resistivity; current-voltage graphs of a wire, bulb, thermistor and diode; practical used for investigating the resistance of different components - includes questions for students to practice. Ideal for AQA GCSE (9-1) P2, Cambridge iGCSE P8 and more Lesson 1/3 Developing: State that resistance = p.d. / current and understand qualitatively how changes in p.d. or resistance affect current. Securing: Recall the four factors that affect the resistance of a conductor. Exceeding: Draw and interpret circuit diagrams containing multiple types of resistance component. Lesson 2/3 Developing: Recall and use the equation R = V / I Securing: Sketch a current-voltage graph for a metal conductor and a filament lamp and describe how current varies with p.d. for a metal conductor. Exceeding: Interpret the current-voltage graphs and explain the differences between the two types of conductor. Lesson 3/3 Developing: Recall that as a wire increases in length, so too does its resistance. Securing: Describe the qualitative relationship between the length and resistance of a wire and the relationship between cross-sectional area and resistance. Exceeding: Apply the proportionality between resistance and length, and the inverse proportionality between resistance and cross-sectional area of a wire to quantitative problems.

Two lessons designed to introduce the concept of electrical charge, static electricity, the uses of electrostatics and detecting charge using a gold leaf electroscope - includes practice questions for students. Ideal for AQA GCSE (9-1) P2, Cambridge iGCSE P8 and more Lesson 1/2 Developing: Recall that atoms are made up of (-ve)electrons, (+) protons and (0) neutrons. Secure: Describe the differences between conductors, insulators and semi-conductors. Exceed: Explain how polythene rods and wool cloth can be used to show charges attract and repel. Lesson 2/2 Developing: Recall that charge can be measured in coulombs or micro coulombs. Secure: Describe that objects can have an induced charge and the need for objects to be earthed. Exceeding: Give examples using electrostatic charge and how it works in each example.

Presentation to help students get to grips with measuring length and time - contains practice questions and pendulum practical - suitable for higher KS3 classes also. Developing: measure length using a ruler, micrometer and vernier caliper Secure: calculate the period of a pendulum by using a stop watch. Exceeding: explain why having accurate measurements is important and explain what zero error is.

Presentation to help students get to grips with motion graphs - contains practice questions and flash animations. Developing: Recognise from the shape of a speed-time graph when a body is – at rest / moving with constant speed / accelerating / decelerating. Secure: Calculate speed from the gradient of a speed-time graph. Exceeding: Demonstrate understanding that acceleration and deceleration are related to changing speed.

Presentation to help students get to grips with calculating speed and acceleration, also the difference between speed and velocity - contains practice questions. Developing: Determine the speed of objects using the following formula: Speed = Distance/Time Securing: Recall the definitions of speed, velocity and acceleration. Exceeding: Calculate the average acceleration.

Presentation to support a ticker tape investigation of motion - contains practice questions, practical instructions/analysis/graph drawing and homework - suitable for higher KS3 classes also. Developing: Conduct the experiment safely Secure: Measure and record accurate results Exceeding: Analyse the motion on the ticker tape

Lesson introducing and explaining Boyle’s Law with reference to kinetic theory and the Kelvin scale - including practice questions for students. Ideal for Cambridge iGCSE P3 and more. Developing: Recall that a gas is made up of tiny, moving particles. Secure: Recall and use the equation pV = constant for a fixed mass of gas at constant temperature. Exceeding: Describe qualitatively, in terms of molecules, the effect on the pressure of a gas of a change of volume at a constant temperature.

Lessons designed to build on prior knowledge of nuclear radiation. Covers Alpha & Beta decay and half-life - includes practice questions for students. Ideal for AQA GCSE (9-1) P4, Cambridge iGCSE P11 and more Lesson 1/2 Developing: Describe the composition of different nuclei in terms of protons and neutrons. Securing: State that during alpha or beta decay the nucleus changes to that of a different element. Exceeding: Use equations involving nuclide notation to represent changes in the composition of the nucleus when particles are emitted. Lesson 2/2 Developing: Recall that nuclear decay is spontaneous and random. Securing: Describe what is meant by half life, in terms of number of nuclei and activity. Exceeding: Calculate half-life from data or decay curves from which background radiation has not been subtracted.

Lesson designed to build on students knowledge of current and charge. Introduces electromotive force (e.m.f.), explains rules associated with voltage in series and parallel circuits - includes practice questions for students. Ideal for AQA GCSE (9-1) P2, Cambridge iGCSE P8 and more Developing: State that the potential difference (p.d.) across a circuit component is measured in volts and recall the definition of electromotive force (e.m.f.). Securing: State that the e.m.f. of an electrical source of energy us measured in volts and recall that 1V is equivalent to 1 J/C. Exceeding: Recall and apply the fact that from one battery terminal to the other, the sum of the potential differences (p.ds) across the components is equal to the p.d. across the battery.

Presentation to help students get to grips with prefixes and scientific notation - contains practice questions - also suitable for higher KS3 classes. Developing: Recall the 8 basic prefixes. Secure: Most students will be able to use the 8 basic prefixes in the keywords and explain what they mean with an example. Exceeding: Apply scientific notation and convert fractions/decimals into standard form.

Lesson introducing the use of forces and turning effects like levers, including moments - includes practice questions for students. Also suitable to higher KS3 classes. Ideal for Cambridge iGCSE P3 Lesson 1/2 Developing: Describe the moment of a force as a measure of its turning effect and give everyday examples. Secure: Understand that increasing force or distance from the pivot increases the moment of a force. Exceeding: Recognise that, when there is no resultant force and no resultant turning effect, a system is in equilibrium. Lesson 2/2 Developing: Calculate clockwise and anti-clockwise moments using the formula: moment = force x perpendicular distance from pivot Secure: Apply the principle of moments to different situations. Exceeding: Apply the principle of moments to the balancing of a beam or pivot.

Lesson introducing and explaining calculating electrical energy & power. Contains worked examples - includes practice questions for students. Ideal for AQA GCSE (9-1) P2, Cambridge iGCSE P8 and more Developing: Recall that electric circuits transfer energy from the battery or power source to the circuit components then into the surroundings. Securing: Recall and use the equations P = IV and E = IVt Exceeding: Apply knowledge of electrical work to assess the efficiency of electrical devices.

Lesson bringing together students knowledge of energy stores and generation, looking at energy resources and their environmental impacts. Suitable for higher KS3 classes. Ideal for AQA GCSE (9-1) P1, Cambridge iGCSE P5 and more. Developing: Recall that there are renewable and non-renewable energy resources and give examples of these types of energy resources. Secure: Assess the relative reliability, cost scale of different energy resources

Lesson introducing the different types of energy and the concept of conservation of energy. Includes practice question and treasure hunt activity and pictionary cards. Suitable for higher KS3 class also. Ideal for AQA GCSE (9-1) P1, Cambridge iGCSE P5 and more. Developing: To understand key ideas and key terms relating to Energy. Secure: To describe the 9 forms of Energy. Exceeding: To describe and explain how Energy is transferred from one form to another.

Lesson introducing and explaining efficiency and how to calculate it. Also shows how to draw Sankey diagrams. Suitable for higher KS3 classes also - includes practice exam question. Ideal for AQA GCSE (9-1) P1, Cambridge iGCSE P5 and more Developing: To understand not all energy is transferred from one form directly to another Secure: To be able to calculate efficiency from given data. Exceeding: To be able to create a Sankey diagram from given data and calculate efficiency from it.