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!

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

In this activity, your child will experience multitasking, then mindfulness and compare the two in terms of productivity and calmness.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Introduce your fifth grader to the Kinara, part of the Kwanzaa tradition, by playing this fast-paced, two player game!

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Want to reinforce new middle school math terms (variables, equations), while helping your child solve simple one and two-step equations?

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

Use two toilet paper rolls to make a pair of homemade binoculars and let the games begin. Here's how:

Help your child improve his coin counting skills in these two math games that have him race to reach $1.00.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

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

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

Riddles about two trains passing in the night are often featured on SAT tests. Help break these problems down into five easy steps.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

In this simple math activity, your young learner will compare two types of Valentine's Day candy using a Venn diagram.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

Looking for something to do with all those plastic 2-liter bottles that seem to accumulate endlessly? Turn them into a unique mini birdbath.

Help your third grader create a Venn diagram fantasy creature by combining two different creatures to create a fantasy creature based on their similarities.

Your child can make a sweet and savory spinach strawberry salad; two ingredients that come together for a light and fresh summer dish!

Your second grader can honor two renowned U.S. Presidents--Abraham Lincoln and George Washington--by crafting larger-than-life pennies and quarters!