Different selections are made from a canteen menu that will cost a given amount. An extension activity is given that asks for all possible combinations to be found.
Students investigate energy transfer by colliding marbles, explaining their observations, and what happens to the energy of the moving marble on impact.
Students compare cars from different eras. They describe how different features of modern cars make them safer. The task assesses students' understanding of how technology can make cars faster and safer.
Students complete a table showing times to boil different quantities of water. They identify the rule that relates the amount of water to boiling time and use it to answer questions.
For this practical students make observations on water flow from three holes set at different heights in a container. They also investigate the effect on water flow if the top is on or off the container.