Source: Ruth Parker
Download: 18″ x 24″ Poster (PDF)
26. Digit Bracelets

Source: Ways to Think About Mathematics: Activities and Investigations for Grades 6-12 Teachers, 2005
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Source: Martin Gardner/My Best Mathematical and Logic Puzzles, 1994
Download: 18″ x 24″ Poster (PDF)
Download: 8.5″ x 11″ Level 1 Handout (PDF)
Download: 8.5″ x 11″ Level 2 Handout (PDF)
Source: Benjamin Dickman/Math Horizons, April 2011
Download: 18″ x 24″ Poster (PDF)
Download: 8.5″ x 11″ Handout (PDF)