tags: associative property

tags: associative property
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Gauss and our star of stars

Number Sense Geometry Math and Art
How many stars are in this image and how did you count them? For Adventurer members we have a teaching suggestions and our solution sheet.

Will our U.S. flag change yet again?

Algebra Geometry Math and Social Studies Current events
How many stripes are in our present flag?  (The bottom right flag that has been in use since 1960; See the PowerPoint) How many stars? What do the numbers of stars and strip...

Lots of pieces

Number Sense Math and Social Studies Data and probability
Brian has a lot of puzzles.  His family must love working on them. What do you wonder about his puzzles? What do you notice? Make an educated guess, about how many pieces are in a...
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