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14. Sundials: Observing and Using Shadows
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Activity in Action:

After taping the flared ends of the straw to the approximate center of the paper plate, use a ruler and cut the straw so it is 2 inches long.

 

A sundial on the playground with several shadow markings.  Notice chalk registration marks which help students realign sundials for each measurement throughout the activity.

 

Sundial with markings for 9 am, 10 am, 11 am, noon, and with a student's guess in red pencil for where the shadow will fall at 2:00 pm.

 

 
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