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More science projects and experiments
Math Worksheets
A collection of science projects, videos and experiments for various grades and topics.
Science Projects or Science Experiments: Grades 3 & 4
Snow and Hail
Our World: Snowflakes
Snowflakes are actually a history of what was happening in the atmosphere as the snowflake formed and fell to the ground. Find out how you can help NASA scientists study different types of snowflakes to learn about the atmosphere and changes in climate.
Weather & Meteorology : What Causes Hail?
Hail is formed in large thunderstorms when the clouds are high enough in the sky for the water within them to freeze. Find out how hail is able to grow to the size of a golf ball or softball with help from a meteorologist in this free video on understanding weather.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe.
There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics
of fraction addition and subtraction or challenge yourself with the insane level.
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