This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

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

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

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 project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

Using a toy race car kids create a visual model of the Doppler Effect.

Here is a kindergarten activity that blends art and science by using magnets, paint, and objects found around the house to create a picture.

In this activity, your child will be challenged to make a tower using paper cups.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this project children practice the scientific method while playing with puffy paint.

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

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Checkerboard play challenges students to use spatial reasoning and computational thinking.

Help your kindergarten or first grade child use his creativity to make a beautiful magnetic patterned structure while discovering the wonders of magnets.

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

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

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

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.