Can you tell what time it is without a watch or a cell phone? Sure you can! Sundials have been telling time for thousands of years. Now you can build a watch-style sundial with this kit from Koontz. Using the same principles as obelisks and shadow clocks, sundials can be aligned to be parallel to the Earth's axis of rotation and use your own geographical latitude and the sun's position to tell time. A gnomon in the center of the sundial creates a shadow that lines up with the current time. So shadows are good for something besides spooking you in the middle of the night and shading you during hide and seek! These shadows actually show you what the solar time is! The sundial watch is assembled from 23 cardboard pieces with a working compass on the watch face. Use the compass and follow the instructions to orient yourself so you always know what time it is. No batteries necessary!
General
S.T.E.M
| Age Group: |
6 - 8 Years
|
| Learning Skill: |
Scientific (Physical Processes, Experimental)
|
Physical Specification
| Material: |
Recycled Cardboard
|
| Number of Pieces: |
23
|
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