Showing Results for three digit using place value : Page 18

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Science fair project that examines the effects of soap on the surface tension of water. How does soap affect the surface tension of water?

Does 100% Fruit Juice have more Vitamin C than juice with artificial ingredients? Find out in this science fair project idea!

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

This science fair project researches the most effective method to cut an onion and stay tear-free.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

This science fair project idea explores substances that cause a bubble to last longer.

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.

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.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This fascinating science fair project explores eye color genotypes.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Is there really such a thing as healthy gum? Students will learn what factors in chewing gum contribute to healthy teeth in this exciting science fair project.

This experiment explores whether music affects the growth of bacteria and could help figure out better ways to process sewage and other microbe-assisted duties.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

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.

Check out this cool science fair project on identifying rocks and minerals for kids.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.