Alvarez, R. "How High is the Water Tower?" Mathematics Teacher 89 (April 1996): 274-278. Eddins, S.K., E.O. Maxwell, and F. Stanislaus "Geometric Transformations — Part 1" Mathematics Teacher 87 (March 1994): 177-180. Friedlander, A. and G. Lappan. "Similarity: Investigations at the Middle Grade Level" In Learning and Teaching Geometry, K-12. Reston, VA: National Council of Teachers of Mathematics, 1987. Jensen, R.J. "Scale Drawings." Arithmetic Teacher 35 (May 1988): 36—38. Johnson, Art. "From Shadows to Surveying: Thales of Miletus." Mathematics Teaching in the Middle School 6 (November 2000): 170-174. Lappan, G., and R. Evan. "Similarity in the Middle Grades" Arithmetic Teacher 35 (May 1988): 32-35. Lufkin, Dan. "The Incredible Three-by-Five Card!" Mathematics Teacher 89 (February 1996): 96-98. Senk, S.L., and D.B. Hirschorn. "Multiple Approaches to Geometry: Teaching Similarity" Mathematics Teacher 83 (April 1990): 274-280. Woodward, E., V. Gibbs, and M. Shoulders. "A Fifth-Grade Similarity Unit." Arithmetic Teacher 39 (April 1992): 22-25. Young, S.L. "Ideas." Arithmetic Teacher 38 (September 1990): 23-33. |