Make A Sundial

Throughout the ages, people, animals and even plants have been using the sun to tell time. The Earth revolves around the sun at a constant speed. On the Earth, it looks like the sun rises in the East and then sets in the west, moving across the sky in a predictable way. With a sundial, you can use the sun to reliably tell time throughout the day.

rocks or chalk
1 cup of playdough (optional)
watch or clock

Find a sunny spot in a lawn or even on a sidewalk.
Put the stick in the ground. If it is a sidewalk, put the stick in the playdough and use that to hold the stick upright on cement.
Throughout the day, place a rock, or mark with chalk for each hour indicating where the shadow falls at that time. Depending on your time, you may have to place rocks over a couple of days before your sundial is complete.

Now your sundial is ready to use. When you want to tell the time, just look for the shadow. In the picture above, the stones are used to mark each hour from 7am to 7pm. The picture was taken at 9:15 in the morning.
In the beginning, you may find it hard to be very precise. With a bit of practice, you should be able to tell time to the nearest 15 minutes, and maybe even more closely.

Use chalk and a ruler to draw in the shadow lines, instead of placing rocks on the hour.

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