An in-class display for the Path of the Sun Lecture Tutorial, (Figure 2, pg 88) in Lecture-Tutorials for Introductory Astronomy. Second edition. By Edward E. Prather, Timothy F. Slater, Jeffery P Adams, and Gina Brissenden.

Constructed by Deidra Nuss and John Feldmeier (Youngstown State University) Parts List:

• 3/16” thick foam board • 1 (one) 4” bolt (diameter in not important) • 1 (one) nut (that fits the bolt) • 2 (two) 1.5” flat washers (that fit the bolt) • 1 (one) acorn nut (that fits the bolt) • Protractor

Directions:1. Out of 3/16” thick foam board, cut a 17” x 12.5” rectangle. 2. Draw a dotted line down the center of the rectangle (the line should be parallel to the 17”

sides) 3. From the short edge measure 1.25” up from the edge and make a mark on the dotted center

line 4. At this spot make a hole for a 4” bolt (the diameter of the bolt is not important). 5. To make both arcs an 8” diameter circle was used. 6. The arc for Shadow Plot A measures 4.5” from the edge on the dotted center line. The arcs

are made with longer dashes. 7. The arc for Shadow Plot B measures 6.25” from the edge on the dotted center line. The arcs

are made with longer dashes. 8. On the two arcs place parallel X’s equal distances apart. 9. When finished making marks, secure the 4” bolt with appropriate sized nut (the diameter of

the bolt is not important). To help secure the bolt, flat washers can be used (picture shows 1.5” flat washers).

10. For added protection, an acorn nut (that fits the diameter of the bolt used) can be placed on the top of the 4” bolt.