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Hunt for natureâs treasure, the many different products made by trees!

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

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Challenge your high school student to find the flaw in this short mathematical proof that one is equal to two.

Does your child need counting help? Here's a simple game that kids can do at home to help them practice counting to two-digit numbers.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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.

Explore which teeth-whitening products work best - Whitestrips or Whitetrays.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.

Sharing can be a challenge, and division doubly so! Practice halving numbers in this competitive card game.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Engage your third-grader in this version of the classic game and she will get lots of practice using mental math to solve addition and subtraction problems.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

This game reinforces the meaning of the term "multiples" and is fast enough to hold the attention of your fourth-grader.

This variation of Duck, Duck, Goose is played in pairs, which means a lot more activity for participants!

This project compares the strength of one, two, and three-ply toilet paper.

In this project, you will observe and record changes in sunspots over two weeks.

Young artists will combine two animals into one in this imaginative art-project-slash-game!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Coil your daughter's two favorite colors into a wearable pendant with just a few scraps of felt!

Transform a single sheet of card stock into a double-sided painting of opposites: on one side, a bright daytime landscape, on the other, a dusky evening scene.

Drift away with this charming craft that lets your child create a paper hot air balloon or two.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Help your first grade child figure out contractions and their original two words by playing this simple game, Contraction Concentration!

All your preschooler needs to create a personalized Halloween memento is their two hands and some black paint.

In this science fair project, young children discover what happens when two fluids that have different densities get together.