Showing Results for two digit using place value : Page 5

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

Science fair project that examines the biodiversity of ant populations in various locations.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

Science fair project that uses distillation to convert salt water into fresh water.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

This science fair project idea will be examining oxidation and acid rain