Pentominos
What do pentominos have to do with geometry?
Washington State GLE's

Washington Content Standards
Mathematics
By Grade Level
Grade 5 (GLEs)
EALR 1 The student understands and applies the concepts and procedures of mathematics.
Component 1.2 Understand and apply concepts and procedures from measurement.
Procedures, Precision, and Estimation
MA-5-1.2.5 Understand and apply formulas to measure area of rectangles and right triangles.
MA.5.1.2.5.a. Explain how to find the perimeter or area of any rectangle using a rule.
Component 1.3 Understand and apply concepts and procedures from geometric sense.
Locations and Transformations
MA-5-1.3.4 Apply understanding of translations (slides) or reflections (flips) to congruent figures.
MA-5-1.3.4.a. Identify a specific transformation as a translation (slide) or reflection (flip).
Grade 6 (GLEs)
EALR 1 The student understands and applies the concepts and procedures of mathematics.
Component 1.3 Understand and apply concepts and procedures from geometric sense.
Locations and Transformations
MA-6-1.3.4 Apply understanding of rotations (turns) to 2-dimensional figures.
MA-6-1.3.4.d. Describe a rotation so that another person could draw it.
Grade 7 (GLEs)
EALR 1 The student understands and applies the concepts and procedures of mathematics.
Component 1.3 Understand and apply concepts and procedures from geometric sense
Locations and Transformations
MA-7-1.3.4 Understand and apply combinations of translations (slides) and reflections (flips) to two-dimensional figures.
MA-7-1.3.4.a. Identify and explain whether a shape has been translated (slid) or reflected (flipped) with or without a grid.