This is a 10 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Heat Transfers. This includes a mathematical explanation of conduction and qualitative explanations for radiations and convection. This is the first PowerPoint in this section (Thermodynamics) and includes a worked example of conduction using steady rate thermal conductivity.

This is a 6 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Sources of Direct Current (DC). This PowerPoint includes a description of cells (and batteries) including internal resistance, photovoltaic cells, and stabilised AC to DC convertors. This is the seventh PowerPoint in this section (Electricity and circuits) and it builds on the previous lessons, bringing many aspects together including resistance in series and the use of capacitors and Zener diodes. v1.01 (Nov 2021 ) - Minor improvements

This is an 15 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of combining sinusoidal waveforms. This lessons starts with a graphical representation of waveforms for AC voltage, and shows how a resultant wave is formed from two sinusoidal waveforms. This is then extended to a graphical solution method, using vectors for phasors, and then a mathematical method using the cosine and sine rules to add two wave equations together. This is the second PowerPoint in this section (Single phase alternating current). v1.01 (Dec 2021 ) - Minor improvements

This is an 11 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of magnetism and solenoids. This PowerPoint includes a description of magnetic strength, magnetic flux density, reluctance, and magnetomotive force. There are several worked examples of the various formulae. This is the first PowerPoint in this section (Magnetism and Electromagnetic induction). v1.01 (Nov 2021 ) - Minor improvements

This is a 12 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Enthalpy, Entropy and the Gas Laws. The first two sub-topics are briefly defined and covered qualitatively with the formula for Enthalpy included. The gas laws are broken down into Boyle’s Law and Charles’ law before being combined to make the standard gas law pV/T = constant This is the fifth PowerPoint in this section (Thermodynamics) and includes a worked example of the use of the gas law when pumping up a bike tyre.

This is a 14 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Resistors and Resistance. This lesson describes the four main resistor types and applies these to Ohm’s Law. Resistivity calculations are covered which is linked to conductivity. Temperature coefficient of resistance is explained, together with a worked example. Kirschhoff’s laws for voltage and current are also briefly introduced. This is the third PowerPoint in this section (Electricity and circuits).

This is a 10 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Resistors in both series and parallel circuits. This PowerPoint includes circuit diagrams and worked examples of the resistance, current and voltage calculations needed for basic circuits. This is the fifth PowerPoint in this section (Electricity and circuits). v1.01 (18th Nov 2020) - Minor corrections v1.02 (Nov 2021) - Minor improvements

iGCSE - Refraction of light and refractive index This lesson covers the refraction of light and the calculation of refractive index when passing from air into transparent materials. This lesson also demonstrates the experiment that can be performed, step-by-step with animation. There are also two examples of light entering and exiting other shapes (prism and edge of a square) which can cause pupils issues in exams.

This PowerPoint goes through the mathematics needed to calculate Kinetic, Work Done and Gravitational Potential Energy. It builds on and reviews velocity calculations. There are two versions of a step-by-step object on a slope experiment which will enable pupils to test the equating of the formulae for Kinetic energy and Work Done and utilise this for calculating braking forces due to friction.

iGCSE - Reflection of light This lesson covers the basics of reflected light, honing in on exam points including the normal and the angles of incidence and reflection. The experiment for reflection of light and a ray box is included, as well as description of specular and diffuse reflections and how to draw diagrams with multiple reflections from surfaces.

iGCSE - Acceleration calculations and graph interpretation This lesson covers the basic calculation of acceleration, and then uses graphs to show calculations using gradients as well as the area under the graph using composite triangles and rectangles. The worksheet is a two page questions sheet (with answer sheet supplied) that goes over the main points covered in the lesson

iGCSE - Total Internal Reflection This lesson covers the refraction of light and the calculation of refractive index as applied to the phenomenon of total internal reflection. This lesson also demonstrates the experiment that can be performed, step-by-step with animation.

This is a 12 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topics of Electric fields. This covers the basics of radial fields around point charges, uniform fields, electrical field strength, electric flux, electric flux density, and Coulomb’s Law. A worksheet and answers is also included. This is the first PowerPoint in this section (Electricity and circuits).

This is a 9 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Shear forces which create stress and strain. This then goes on to explain how this relates to the Modulus of Rigidity. A set of questions and answers is included. This is the seconds of three PowerPoints in this series and covers the mathematical and physics for an analysis of Stress and Strain in Engineering materials as applied to bolts and rivets under shearing conditions v1.01 Error in calculation corrected v1.1 Question sheet and answer sheet added v.1.11 (Jan 2023) Minor change to ppt; rewording of worksheet question to make it clearer

This is a 7 slide PowerPoint that covers BTec National Engineering (A-Level equivalent) on the topic of Tensile and Compressive forces which create stress and strain. This then goes on to explain how this relates to the Modulus of Elasticity (Young Modulus). Three question sheets are included complete with worked answers. This is the first of three PowerPoints in this series and covers the mathematical and physics for an analysis of Stress and Strain in Engineering materials v1.1 - PDF question sheets and worked answers added to resource v1.11 - Two more sets of questions and answers added to resource; minor improvements to ppt also made v1.12 - Error on the answer sheet corrected v1.13 - Jan 2023 Error on Powerpoint corrected