Activity Database

Activity Authors
Activity Circles
Click To Sort By
  • 6th - 8th (2)
  • 9th - 12th (2)
  • College Level (2)
  • For Teachers (2)
  • Geometry (1)
  • Problem Solving / General (1)
Supporting Materials
Supporting Materials
  • Facilitator Guides (2)
Session Styles
Session Styles
  • Kinesthetic Element (1)
  • Multiple Representations (1)
  • Problem Posing (1)
Mathematical Practices
Mathematical Practices
  • MP1 - Make sense of problems and persevere in solving them. (1)
  • MP2 - Reason abstractly and quantitatively. (1)
  • MP3 - Construct viable arguments and critique others' reasoning. (1)
  • MP4 - Model with mathematics. (1)
  • MP7 - Look for and make use of structure. (2)
  • MP8 - Look for and express regularity in repeated reasoning. (1)

Grid Power


“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 count all squares of any size on a limited grid will require participants to persevere, organize their thinking and construct viable arguments.