Showing Results for comparing-three-digit--old

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!

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Find out whether packaged seeds actually do expire in this new science fair project idea.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Is it a square or a circle? See if you can trick your friends with this zany science project!

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

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

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!

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

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.

This science fair project idea investigates whether plants can survive being frozen.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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