Showing Results for comparing-three-digit--old

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.

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

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?

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!

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.

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

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

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

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.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Plants and light seem to be good buddies, but how far does the friendship really go?

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This project examines whether people's taste perception is influenced by what they see.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

This science experiment has students test whether a snail moves faster on concrete or dirt.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

The objective of this science project is to determine the length of time for different seeds to germinate.