Showing Results for comparing-three-digit--old

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Teach your child how butter is created by shaking up cream the old-fashioned way.

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project examines how seeds hitchhike on animals and clothing.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this experiment we will be determining whether birds prefer certain colors of seed.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

This science fair project idea explores whether talking to a plant will help it grow.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

In this project students experiment with making music using only glasses of water.