Showing Results for three digit and two step word problems : Page 51

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

Try this arts and crafts activity with your preschooler: make bread from yeast dough to teach her about the science behind bread baking.

Ignite your kindergartener's love of adventure and learning with an imaginary trip under the sea.

Help your preschooler practice observing and experimenting with this exciting activity where they'll get to examine objects below the water's surface!

Who knew that nature could get so crafty? Show your kindergartener how to collect and morph pinecones into a whole team of personalized pinecone people.

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!

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Teach your child about using pumps to move water in this simple and educational preschool science activity!

Can you think of a way of cleaning dirty water using the sun? In this activity, you will be making a "solar still" that is able to do just that!

Science fair project that determines which types of clouds are best at blocking harmful UV radiation.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This experiment evaluates whether a personâs dominant hand is more sensitive than their non-dominant hand.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

Show your child the solar system and let them explore the stars and space by creating a painting. It's a fun and easy way capture your child's imagination.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.