Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.