Talk about why some things float and some items sink, then talk about why children who can’t swim wear arm bands and how we could give our figure the same buoyancy.
What materials could you use to get the superhero to float?
Could you use salt to make the superhero float?
Although the bubble wrap or pool noodle makes the figure weigh a little more, it also displaces more water making the figure more buoyant.
The pockets of air in the bubble wrap and pool noodle mean that the figure and bubble wrap together are less dense than the water, making the figure float.
Can you make a lemon sink? Think carefully about why the lemon floats to work it out.
Can you think of a liquid that would float on the top of water?
Links to English
Write a superhero story where the hero has to find a super fast way to make him/herself float.
Write a set of instructions so someone else could copy your design.
Links to Maths
Can you time how long it take you to build your design? Do you get faster as you practice? Can you record the same data for other people?
Weigh your superhero figure, does a heavier figure need more of the buoyant material?