P209 - Modeling the effect of toothpaste on teeth
An activity where children learn how toothpaste helps protect teeth from the damaged caused by fizzy drinks.
more..
P208 - Making and testing a tilt switch
An activity where children make a tilt switch to better understand how circuits work.
more..
P207 - Making and testing a pressure switch
An activity where children make a pressure switch to better understand how electrical circuits work.
more..
