Students can practise calculating surface area to volume ratios. Answers are provided.

PowerPoint that covers the following learning objectives: Explain why bond breaking is endothermic and bond making is exothermic. Explain why a reaction is exothermic or endothermic in terms of the amount of energy needed to break bonds and being released when bonds are formed. Calculate the energy change for a reaction, including the correct unit. Includes diagrams, explanations, examples, questions and answers. This is made for a GCSE chemistry class. If you could spare 5 minutes, please review this resource, to help my online presence grow! :)

Learning objectives: To be able to describe what food webs show. To be able to combine food chains to form a food web. To be able to explain why a food web gives a more accurate representation of feeding relationships than food chains.

Learning objectives: To be able to describe what a physical property is. To be able to define common properties. To be able to describe the properties of metals and non-metals.

Learning objectives: Describe the stages involved in a reflex action. Identify stimuli, receptors, coordination centres, and effectors in examples of reflex actions.

Learning Objectives: • Define what work is in a scientific context. • Calculate the work done by a force. • Use the equation for work done to calculate distances or size of forces.

• Describe the model of the Solar System. • Describe how objects in the Solar System are arranged.

Explain simply why we have day and night. Explain why seasonal changes happen.

• Describe the effect of changing the mass or the force acting on an object on the acceleration of that object. • Calculate the force required to cause a specified acceleration on a given mass. • Perform calculations involving the rearrangement of the F = ma equation.

Describe the difference between speed and velocity. Calculate the acceleration of an object using the change in velocity and time. Rearrange the acceleration equation to calculate change in velocity or time.

Calculate the resultant force when 2 forces act on an object at an angle.

Full lesson PowerPoint for ionic bonding. This is made for a KS4 level chemistry class. The following learning objectives are covered: Define ionic bonding. Work out the charge on the ions of metals and non-metals from the group number of the element limited to Group 1,2, 6 and 7. Draw dot and cross diagrams for ionic compounds formed by metals in Groups 1 and 2 with non-metals in Groups 6 and 7. Includes examples, diagrams, questions and answers.

PowerPoint that covers law of reflection, virtual images, specular reflection and diffuse reflection. This is made for a KS3 level class. Includes diagrams, class practical (or demonstration/video), questions, answers and assessment for learning opportunities.

PowerPoint that covers the key words: transparent, translucent, opaque, absorbed, transmitted, luminous, non-luminous, light meter and reflected. This is made for a KS3 level class. The PowerPoint includes the answers to the activities.

PowerPoint that covers states of matter (solids, liquids and gases) for a KS3 level class. Includes questions, answers and assessment for learning opportunities.

PowerPoint that covers the changes of state between solids, liquids and gases for a KS3 level class. Includes diagrams, questions and answers.

PowerPoint that covers gravity, mass and weight at a KS3 level. Includes the equation weight = mass x gravitational field strength.

PowerPoint that covers the following learning objectives: Describe what is meant by an inherited disorder and recognise examples. Use a genetic cross to explain how inherited disorders are passed on and predict the probability of a child inheriting a genetic disorder. Use a Punnett square diagram to predict the outcome of a genetic cross using the theory of probability. This is made for a GCSE biology class. Includes questions and answers.