Showing Results for three digit and two step word problems : Page 33

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

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.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Help your child plant a "tea garden": a garden made of herbs for making teas.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Make a lei and bring a touch of the tropical lifestyle into your home!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

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 free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!