More science projects and experiments
A collection of science projects, videos and experiments for various grades and topics.
Science Projects or Science Experiments: Grades 3 & 4
Our World: Snowflakes
Snow and Hail
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.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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