This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

This project examines the concentration of dissolved oxygen in water, with and without oil.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.