Galileo's Battle for the Heavens

Ice core samples give scientists access to climates of old—those from more than 800,000 years ago. Through an analysis of various temperature graphs from ice cores, tree rings, and weather stations, scholars compare historical climates...

Environmental science enthusiasts show what they know at the end of the year by taking this full-fledged final exam. They answer multiple-choice, graph interpretation, and essay-analysis questions, 73 of them in all. Topics range from...

This exam covers every topic in a typical first-year biology course. A wide variety of question styles gives high schoolers every opportunity to show what they know. Why start from scratch when a comprehensive final exam is easily...

Sunspot activity has been monitored continuously since about 1700. The historical data shows that sunspot activity rises and falls in a roughly 11-year cycle. This project shows you how you can use both graphical and statistical analysis...

Examine the unique graphs coined broken-line graphs. Using the phase change of water for data, learners answer questions related to the temperature and energy at different times in the cycle of the phase change. Questions focus on the...

This video segment adapted from NOVA shows how Galileo used his telescope to carefully observe and study sunspots.

There's absolutely no error in using the tutorial! Learners use spreadsheets to create column or bar graphs with error bars. They also learn how to calculate the standard error of the mean in the tutorial. This is the third installment...

Students explore the water cycle.  Students identify the stages in a water cycle and create a PowerPoint presentation based on their knowledge.

Young scholars examine what a sunspot is and how it is produced.  In this sun lesson students locate and measure sunspots then view them through a camera.

Students examine the relationship between chlorophyll and carbon dioxide in the atmosphere.  In this investigative lesson students study the local effects of climate change.