Carry out a ‘Sink or Float’ investigation with different Lego pieces (bricks, minifigures etc.). Remember to make a prediction before you test.
Build a roofless Lego house. You will add different materials for the roof and experiment to test how waterproof each material is. The suggested three materials are: grass, sticks and Lego bricks (Top Tip: You can test as many materials as you like). Test each material by making it ‘rain’ on your Lego house with a water sprayer. Which material will be the most waterproof? Write up you experiment and remember to make a prediction (hypothesis) Top Tip: you can find some free KS1 experiment writing templates online,
Build a Lego car and figure out a way to fasten a balloon to it, blow up the balloon and observe what happens to the car. What is making the car move?