Eggmosis – Teaching Selectively Permeable Membranes with Eggs. Because of the inner membrane underneath the shell, an egg is a perfect tool when teaching students about selectively permeable membranes. This demonstration takes seconds to set up and can be left out for a few days for students to observe.
How to: discover if you're a super-taster -- Super-tasters experience the five basic tastes, especially bitter foods, with greater intensity. Work out if you are a super-taster by following Mark's simple step-by-step instructions.
Try this science experiment with children over the course of several days. Fill up 4 vases with different coloured water and put 1 white carnation in each one. Watch the flowers over the next four days change to the colour of the water.