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Task: students investigate the rolling distance of marbles on different surfaces. Assessment focus: processing information to answer a question.

Task: students, in small groups, discuss a concept cartoon about rolling cans, before making a prediction about which will roll further. Assessment focus: making predictions about friction.

Students decide on the variables that will make an experiment about boiling water a fair test. Assessment focus: Recognising multiple variables.

Task: Predict, Observe, Explain, (POE) activity observing what happens to air in a balloon when it is heated. Assessment focus: behaviour of gases when heated and cooled.

Task: Students decide what sort of animals two skulls belong to. A self-assessment checklist is included. Assessment focus: using evidence to identify carnivores and herbivores.

Explain what affects the distance travelled by toy cars, and why they eventually stop. Assessment focus: science explanations using ideas about forces and energy.

Task: Students fill in a chart to select the best material for making 6 objects, and give reasons for their answers. Assessment focus: properties of materials related to use.

Choose which toy vehicle will roll further, and explain why. The two vehicles are set up under different conditions (ramps at different slopes, rolling onto different surfaces at the bottom). Assessment focus: science explanations using ideas about forces and energy.

Task: Describe what happens to ice in a glass of water, giving reasons, and explain where water forming on the outside of the glass comes from. Assessment focus: changes of state.

Use knowledge of insulation to answer questions about baked Alaska dessert, and how it compares to a chilly bin. Assessment focus: Interpreting diagrams, interpreting analogies, and using knowledge of insulation.

Task: Describe where water goes when washing is drying and from a swimming pool, and discuss factors that affect this process. Assessment focus: evaporation.