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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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 science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea explores how length affects the weight a bridge can hold.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

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

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

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

This science fair project teaches students about wilting and browning of salad greens.

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

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.