In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.