These sites include information about the history of this holiday and why we celebrate it. Learn more about Punxsutawney Phil and groundhogs. There are many classroom activity ideas and online games. Includes a link to an eThemes Resource on measuring shadows.
Learn about the history behind Groundhog Day and scroll down to see the predictions he has made throughout the years. Click on "Present Weather" at the top to see what the temperature is in Punxsutawney, Pennsylvania.
These sites explain why shadows change their length depending on the time of day and the season. Find out how to determine the height of an object using a shadow stick and ratios. Includes an interactive activity that lets you change the location of the sun and see how that changes the shadow length. There are several instructions for conducting experiments with shadows.