Showing Results for two digit using place value : Page 22

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

Here's a science and nature activity to help your kindergartener get outdoors and learn about the structure of leaves.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

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

This science fair project idea determines which flower lasts the longest.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

Help your child build her very own science laboratory at home for experiments and science projects. This is a quick, easy, and fun educational tool!

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.