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Showing Results for practice three digit and regrouping : Page 4

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Parachutes

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

The Mozart Effect

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

DIY Compost: Aerobic and Anaerobic Decomposition

The goal of this project is to create an exciting topographical map out of dough.

Create a Contour Map

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Keeping Cut Flowers Fresh

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

Melting Crayons

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Design Challenge: Inflate a Balloon

This science fair project idea produces varying pitches of sound.

Changing the Pitch of Sound

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Why Does the Moon Glow?

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Wacky Windmill Challenge

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

Crayon Rock Cycle Experiment

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Why Does Honey Crystallize?

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

How Do Icicles Form?

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Feeding Plants

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

All About Air Pressure

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

Using Mirrors in the Garden: Measuring Light Reflection

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Fastest Way to Cool a Soda

This science project uses Mohs&acirc; Hardness Test to show kids how to compare the hardness of different types of minerals.

The Mohs Test: How to Compare the Hardness of Minerals

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

DIY Electromagnet

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Form and Function

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Eye Witness, You Witness

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Bee Watcher: What's Buzzing?

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.

Crystal Wonderland

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

How to use Colored Filters to Send Secret Messages

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Does a Dark Fridge Prevent Food from Spoiling?

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 Rings of Saturn: A Scale Model

This science fair project idea investigates the difference in reaction times between boys and girls.

Reaction Time

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Latent Fingerprints

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Echoes: How Sound Waves are Reflected and Absorbed

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Does Skin Thickness Decrease Fruit Spoilage Rate? 

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