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.

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

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

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!

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 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.

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

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

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

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

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

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

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

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?

Get a better understanding of water content by dehydrating carrots.

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

Learn all about balance and motion as your child designs a corn maze!

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Your child will create an adorable Christmas tree from their footprint and practice counting while decorating their tree with objects of a variety of textures.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

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

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

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Your child can create his own texture tree, experimenting with design during the process. The result will be a beautiful addition to your holiday decorations

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.