How and Why do our Shadows Change Throughout the Day?

It was the perfect sunny day for us to start our astronomy unit by studying how our shadows change throughout the day.  Students worked in pairs to outline their shadows at about noon today and completed several shadow challenges (ask your 5th grader to tell you about a shadow challenge they attempted today).  Before we went out to observe our shadows 3 hours later we made predictions about what we thought we should see - many of us were quite surprised by the change!