Showing Results for two digit using place value : Page 19

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.

Determine which video game elevates the heart rate best and burns the most calories.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project teaches students about wilting and browning of salad greens.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

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!

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.

This surprisingly good glue recipe comes from common kitchen items.

Use a dichotomous key to identify plants or animals.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

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

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Learn all about balance and motion as your child designs a corn maze!

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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.

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

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.