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Engineers in training can get started with this simple wheel-and-axle construction activity.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

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

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.