Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.