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http://www.thingiverse.com/thing:1324477
Pocket Sundial by wilsonandhowell is licensed under the Creative Commons - Attribution - Non-Commercial license.
http://creativecommons.org/licenses/by-nc/3.0/

# Summary

A simple 'pocket sundial'. A great little learning project. For a great basic understanding of what can be learned from a sundial visit http://www.mysundial.ca/tsp/gnomon_height.html and the rest of the pages that go with it, very simple and intuitive.

# How I Designed This

## How I did it

I just thought a sundial would be a fun way for people to learn and so modeled it up in just a few hours.

# Custom Section

## Project: Sundial for Trig Education

Objectives: The number of different things that can be learned from a simple sundial are astounding. Students can expect to gain a good understanding of planetary motion, latitude and longitude, sine cosine and tangent functions, and how these sciences can be put into practical use right in your own yard or wherever you are.

Audiences: Just about anyone can learn from a sundial. The amount of information you want will depend on some mathematical background such as trigonometry but it isn't necessary as there are simple practical things to learn for even the youngest student using a sundial.

Preparation: Depending on the background of the student preparation should be readily available. The mathematical student will find sin cos and tan function tables just about anywhere and the young ones don't need anything but the sundial (and a little daylight) to get started. 3D printing should be fairly easy as I've designed this to be made with no supports necessary.

Steps: It's super easy... print the two parts and slip the gnomon (the sticking up part) into the slot, glue if you want, point the dial toward the South (I have modeled it with a built in pointer gauge if you want to get accurate) and wala your ready to tell time and/or start teaching.

Results: Results are fairly straight forward. Students can begin learning to tell time (the old fashioned way :) or start to understand how trigonometric functions can be applied in everyday matters. Students will realize that even astronomical events can tell us a great deal about our world and the way things work in it.