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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.

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

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

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

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

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

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:

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

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

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

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

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

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

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

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

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

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

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

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

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

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.