This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

This science fair project idea investigates whether air has mass and weight.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Learn how different types of soil affect how animal tracks form in this experiment!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project teaches students about wilting and browning of salad greens.