What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

This slightly messy, but tons-of-fun tactile activity will cement the idea of the land and water as pictured on maps in your young learner's mind.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

Create a self-portrait from natural materials in this collage craft activity!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!