Competitors go head-to-head only this time it's a race to figure out the lowest common multiple of two numbers; an important step to working with fractions!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

Trying to find sums of groups of multiples is a great way to practice your addition. Be sure to double check your work. If you clear all of the cards, you win!

This science project establishes a "breakability index" - basically to assess how much damage is done in different circumstances.

Test out various brands of permanent markers to see which one is least water soluble.

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

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This surprisingly good glue recipe comes from common kitchen items.

Show your kindergartener how to craft a pretty Mother's Day jewelry box that's fit for the baubles of a queen (or at least an extra special mom)!

Use common kitchen tools to create an entirely uncommon work of art!

This experiment explores the most common colors that appear among a sample of crossbred guppies.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

Here's a hands-on way to help your child understand how common fractions can be equivalent.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Recognizing number patterns is an important ability on the SAT. Here's a game that teaches your student some of the most common sequences in mathematics.

Research responsibilities of physicists, and common thinking patterns. Devise a questionnaire that measures career aptitude in physics.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

This school bus is easy to make, and all you need are some common household items.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

This reading activity combines some of the most common sight words with a pictograph puzzle that's sure to keep your kindergartener engaged.

Use the appeal of the common road sign to your advantage by creating a game with hidden learning opportunities.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

Young scientists develop a hypothesis, conduct an experiment, and then revise their hypothesis to find out which common household liquids dissolve candy corn.