Everyday Math (2004) Teacher Lesson Guide,
pp. 79-84, pp. 286-304
Student Reference, pp. 26-30
Math Journal, p. 32
Math Master, p. 228
Investigations/Scott Foresman (2006) Name That Part,
Investigation 1, Session 4: pp. 2--3
Between Never and Always
Investigation 1, Sessions 1 and 2, pp. 4-18
Measurement Benchmark
Investigation 1, pp. 25-37
