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NSD Unit

The Non-sighted Shadow Detection Unit was developed as part of the Tactile Astronomy course created at the School for the Blind at the School for the Deaf and the Blind in Colorado Springs, CO. This activity allows non-sighted individuals to use a gnomon and the sun's shadow to determine high meridian and ultimately True North. The NSD-Unit is used with the activity, "Astronomy with a Stick - Tracking a Moving Shadow." You can find "Astronomy with a Stick" in its entirety at ( http://nsta.org/awsday/ ). Step-by-step details for making your own NSD-Unit may be found on the School for the blind's web site by going to ( http://www.csdb.org/ ), click on the School for the Blind link, click the Teachers link and go to Downloadable Instructional Unit(s). At the Resources link you will find a number of the resources that I used to develop the Tactile Astronomy course. Have fun!