This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.

This project examines how temperature affects the volume of gas in balloons.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Turn any sunny summer day into a fun and special occasion by having a watermelon seed spitting contest!

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Make this delectable custard, meringue, and graham cracker pie will give your fifth grader practice with measurement and get him interested in the kitchen.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.