Compare fractions in this two-player math game. The objective of the games is to work together to determine who has created the largest fraction.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Do different types of oil mix or stack? Find out in this science fair project idea!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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

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

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

This flash card game will help your child memorize words while visually learning the differences between objects.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this activity, your child will write stories about two different people. The stories will include similarities and differences in the ways each person lives in their communities.

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.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

In this project, different brands of microwave popcorn are tested and compared.

Compare and order numbers and introduce mathematical inequalities in this fun math card game.

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

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

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

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

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

Let your curious kindergartener experiment with this tasty combo as you sneak a little compare and contrasting practice into the mix