This activity, written to comply with the NCTMCopyright 1998-2004 Cynthia LaniusStandards,and to support theTexas Essential Knowledge and Skills (TEKS)uses a fun mathematical puzzle to provide a base for investigation and discovery. It can be used in geometry or in Algebra I to provide data for curve fitting. An online Tetris game can be used to create interest and give experience in rotations, reflections, and translations. Even though I don't have any data to back it up, I know from personal experience that playing Tetris builds intuition about transformations.

Grade Levels:5-10

Procedures:Activities are written to be done independently by students or with guidance from the teacher.

Mathematics Topics:Assigning variables, making predictions, writing formulas, graphing, perimeter, rotations, reflections

Connecting Mathematics:Connects geometry and algebra (curve-fitting)

Materials and media:Square grid paper, triangle grid paper, Internet connection

Suggested Assessment:Evaluate student answers to Challenge Problems.

Texas Curriculum Documentation:

Algebra I TEKS111.32 d 3Geometry TEKS111.34 b 3D

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URL http://math.rice.edu/~lanius/Lessons/Polys/polyt.html