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Which One Doesn't Belong? - Mary Bourassa

Grades
5 to 12
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Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, graphs, expressions, photos, incomplete sets,...more
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Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, graphs, expressions, photos, incomplete sets, and miscellaneous. The site does not provide a "correct" answer. Each puzzle has multiple (possible) answers providing opportunities for all to choose and justify their response.

tag(s): critical thinking (137), logic (160), problem solving (233), puzzles (148)

In the Classroom

These puzzles are perfect for use with an interactive whiteboard or projector. Use the puzzles as a warm up for any math class or use for journal writing prompts. The photos are perfect to use with younger students. Use this site for discussion and debate with your gifted students. Challenge students to create puzzles and have classmates solve. Have cooperative learning groups create online books of their puzzles using a tool such as Bookemon, reviewed here. Have students create an annotated image including text boxes and related links using a tool such as Google Drawings, reviewed here.