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This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Teach your child what a sugar plum is with this easy recipe that gets your child to chop, mix, and roll his way to a delicious treat.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Create a graph based on the interests of family member's to see who has what in common. Your child will practice her math skills and get to know the family!

Here's a math activity that uses coin riddles to help your third-grader improve his coin-counting and logical thinking skills.

One of the most important parts of any Christmas tree is what's on top. This year, have your child make an angel that'll put the finishing touch on your tree!

Make the abstract nature of time and money easier for your kid to understand with some fun ideas that focus on these concepts.

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

Dig up some dinos while promoting curiosity and sensory skills in this hands-on activity that will have your child searching for prehistoric treasure!

If your 2nd grade child asks for time often, encourage him to read time on his own by talking about time throughout the day.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Play this hidden number game with your preschooler that will give her a leg up in learning numbers.

In this fun math activity, second graders will learn to estimate items in a jar! 

Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

This hands-on activity that involves arranging pieces of yarn will teach your pre-K child the concept of ordering items by length in an interesting way.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

Build your child's vocabulary by exploring and discussing spatial relationships during everyday activities such as building, rearranging, and ordering.

Introduce colors to shadow play with this creative and irresistible science activity!

Give your smart second grader a rich challenge with this activity that combines graphing practice with money!

This fun game helps children learn to estimate the most basic unit of time--a minute--without a clock.

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Challenge your third-grader to sharpen her new math skills--and maybe do the planet a favor, too.

Put your kid in charge of her own survey! She'll poll her relatives and friends, collect information, and then create a colorful chart to display her findings.

Most timeline activities are all about history. Make timelines more relevant and personal for your child by focusing on the hours and minutes of his day.

Use familiar household items and decorations to turn estimation into a fun game!