Showing Results for three digit and two step word problems : Page 47

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

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

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!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.

Have your child try this classic experiment that demonstrates circular motion using a bucket and rope. Be careful, you might get soaked!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Evaluate gender differences in processing visual information.

Teach your child about recycling and gardening as she re-uses an empty plastic milk gallon jug to craft a swan-shaped plant container!

Help your preschooler craft a homemade wind spinning device--a surefire to make your backyard sparkle, and teach her a bit about weather!

In the mood for a bit of silly science? Help your child create a truly one-of-a-kind planter out of a potato head!

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Bring back the groovy memories by making shrinky dinks using household materials, while learning about the science of plastics. Here's how to get started:

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

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