An activity where children learn that the surface area of an object affects how it is slowed down by water resistance. 

A forces activity about air resistance that, unlike traditional parachute activities, yields reliable and comparable results.  

A practical activity that enables children to blow bubbles, inside bubbles, inside bubbles...

This practical offers a safe, controlled and clean method for children to enjoy this reaction, whilst clearly being able to observe/identify the reactants and products.