Showing Results for area of a rectangle using square units : Page 20

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Engineers in training can get started with this simple wheel-and-axle construction activity.

Make a spring collage with your child to get them outside and those creative juices flowing!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Determine which video game elevates the heart rate best and burns the most calories.

Compare the ignition rates of various types of flame-retardant materials.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

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

This project examines which style of central-air system filter traps the most particles from the air.

Make frog feet sponge prints with your child for a fun and educational crafts activity.

This experiment will explore if and where fractals can be found in the natural world.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

Word color association is just a fancy way to talk about the way we connect colors with words.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

Science fair project that examines the relationship between fluid flow rate, pressure, and resistance.

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!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!