Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

This science fair project idea explores whether talking to a plant will help it grow.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Summer is a great time to work on pre-kindergarten skills that will serve your child well in her first year at school, while having some fun in the sun!

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

Science fair project idea examines what is remembered from high school education. Formulate and administer high school curriculum tests to adults over 21.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

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

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

Before digital cameras, before Polaroids, there was the original pinhole camera. Build a pinhole camera and see what true vintage photography looks like!

Looking for a way to help your teen explore the fun side of physics? How about a round of Saturday morning cartoons?

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Use a dichotomous key to identify plants or animals.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Think about the adaptive utility of an important aspect of our physiology.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

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.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

This science fair project idea discovers the principle of conservation of mass.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.