Math Circle Activity Database

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  • Teacher Math Circle Starter Activities (9)
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  • 1st - 2nd (12)
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  • Algebra / Arithmetic (33)
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Supporting Materials
Supporting Materials
  • Facilitator Guides (88)
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Session Styles
Session Styles
  • Manipulatives (33)
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  • Problem Posing (45)
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  • Work Backwards (21)
  • Integrates Technology (17)
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Mathematical Practices
Mathematical Practices
  • MP1 - Make sense of problems and persevere in solving them. (83)
  • MP2 - Reason abstractly and quantitatively. (53)
  • MP3 - Construct viable arguments and critique others' reasoning. (58)
  • MP4 - Model with mathematics. (58)
  • MP5 - Use appropriate tools strategically. (40)
  • MP6 - Attend to precision. (40)
  • MP7 - Look for and make use of structure. (72)
  • MP8 - Look for and express regularity in repeated reasoning. (61)

Factor Game

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A teacher challenges students to a game. The rules are explained as the game progresses. The player with the highest total wins! Students then play against each other. Afterwards, while analyzing the game, prime, composite, perfect, deficient, and abundant numbers are discovered and defined. Students again play the game using...

Grid Power

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“When I grew up in the Soviet Union, all we used for math was grid paper. Grid paper leads to discovery.” This is how Tatiana Shubin, San Jose State University, begins her lesson demonstrating the myriad of wonderful math questions arising from a simple sheet of grid paper. Attempting to...

Prejudiced Polygons

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We adapt “Parable of the Polygons” (Vi Hart and Nicky Case), an online simulation on diversity and segregation, into an appropriate MTC session. The session is interactive, and offers multiple layers of content depending on the age and comfort level of students with conversations on social issues. These levels include:...