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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!

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Take the plunge into handcrafting with this neat and tidy soap recipe. Here's how to create your own personalized soap.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Make this easy composting dessert and then enjoy the yummy results!

This clay "painting" activity encourages and supports creative development and critical thinking skills.

This science fair project idea explores whether dogs do look like their owners.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Use natural materials to try out a new kind of weaving. Your child will enjoy gathering her materials outside, and then using them to create a piece of art!

Fibonacci sequences have been observed throughout nature, like in leaves and flowers. In this project, students find examples of the Fibonacci sequence.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This surprisingly good glue recipe comes from common kitchen items.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.