Showing Results for comparing-three-digit--old : Page 26

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Experiment with the wonders of pressure and condensation by crushing a soda can with nothing but air and water!

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!

This experiment will explore the best way to create a perfect soft-boiled egg.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This biodiversity project examines the biodiversity in your own backyard.

This science fair project aims to examine the nature of pi and analyze other properties and values related to circles, such as radius, diameter

This science fair project idea explores how far the average human can see.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

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

In this experiment a spectrometer is used to analyze the light emitted by burning ion solutions.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

The objective of this science fair project is to determine whether planaria reproduce asexually by regeneration.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Have your child make a special mobile inspired by the weather outside. Learn about seasons, the environment, and art in 3D.

Learn the anatomical and physiological differences between central and peripheral visual systems.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.