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

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

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

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

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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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?

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

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

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

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

In this fun activity, frozen cubes of paint provide your preschooler with a cool new way to paint a masterpiece.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

Here's a simple science activity that will help your child better understand how wells bring us water.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

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

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 combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

In almost every preschool classroom is a sensory table. Learn how to make one at home!

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.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

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:

In this science fair project, young children notice and track changes in trees throughout the year.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

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!