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

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

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

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

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

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

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

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

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

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

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

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

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

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!

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

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

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Learn how different types of soil affect how animal tracks form in this experiment!

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

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

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

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 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: