It's not easy to measure the weather. Pupils learn about what all weather has in common—the atmosphere. Scholars discover how a meteorologists must be able to measure aspects of the atmosphere and decipher the data. They then create a...

Find out what makes a tornado happen and if tornadoes can be prevented with large walls. Includes video.

[Free Registration/Login Required] An informational text about tornados written on the 2nd grade reading level. The text is followed by ten comprehension questions in multiple choice or extended response format. A link to answers is...