Measure children's shadows outside at different times of the day. Mark the shadows so that your children can see the shadow grow and then shrink back. Have each child create a groundhog on a paper plate. Attach a stick to this and put it in the ground. Measure the shadow of the ground hog every few hours. Graph the results. Have your children stand in one spot. Measure and mark their shadow. Now have them sit down and measure the shadow. Talk to them about why the shadow changed. Everything Preschool >> Themes  >> Groundhog's Day >> Science