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Problems of the Month Index to Mathematical Concepts Primary Level A Between the Geometry Lines Calculating Operations & Palindromes Algebraic Thinking Circular Geometry Reasoning Courtney's Operations & Collection Algebraic Thinking Geometry Cubism Cut It Out Geometry Level A Level B Level C Level D Level E Geometry Geometry Geometry Geometry Geometry Operations & Algebraic Thinking Geometry Operations & Algebraic Thinking Geometry Expressions & Equations Expressions & Equations Functions Geometry Geometry Geometry Measurement & Data Measurement & Data Measurement & Data Measurement & Data Measurement & Data Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Statistics & Probability Geometry; Functions Geometry Cutting a Cube Digging Dinosaurs Geometry Geometry Geometry Geometry Geometry Counting & Cardinality Diminishing Return Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Measurement & Data Operations & Algebraic Thinking Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Measurement & Data Operations & Algebraic Thinking Expressions & Equations Operations & Algebraic Thinking Expressions & Equations Geometry Geometry Operations & Algebraic Thinking Measurement & Data Operations & Algebraic Thinking Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Operations & Algebraic Thinking Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Ratios & Proportional Relationships Numbers & Operations – Fractions Statistics & Probability Operations & Algebraic Thinking Statistics & Probability Ratios & Proportional Relationships Numbers & Operations – Fractions Statistics & Probability Expressions & Equations; Functions Expressions & Equations; Algebra Geometry Measurement & Data Numbers & Operations in Base Ten Operations & Algebraic Thinking Statistics & Probability Numbers & Operations – Fractions Operations & Algebraic Thinking; Functions Double Down Fair Games First Rate Fractured Numbers Friends You Can Count On Game Show Got Your Number Growing Staircases Functions Statistics & Probability Functions Statistics & Probability Ratios & Proportional Relationships The Number System Statistics & Probability Functions Statistics & Probability Statistics & Probability Statistics & Probability Statistics & Probability Statistics & Probability Statistics & Probability Expressions & Equations Functions Functions © Noyce Foundation 2014. This work is licensed under a Creative Commons Attribution‐NonCommercial‐NoDerivatives 3.0 Unported License (http://creativecommons.org/licenses/by‐nc‐nd/3.0/deed.en_US). 1 Infinite Windows Lyle's Triangles Measuring Mammals Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Measurement & Data Measurement & Data Expressions & Equations Operations & Algebraic Thinking Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Operations & Algebraic Thinking Geometry Expressions & Equations; Algebra Expression & Equations Algebra Operations & Algebraic Thinking Miles of Operations & Tiles Algebraic Thinking Movin 'n Operations & Groovin Algebraic Thinking On Balance Measurement & Data Once Upon a Counting & Time Cardinality Operations & Algebraic Thinking Operations & Algebraic Thinking Numbers & Operations in Base Ten Ratios & Proportional Relationships Measurement & Data Operations & Algebraic Thinking Geometry Expressions & Equations Geometry Ratios & Proportional Relationships Measurement & Data Operations & Algebraic Thinking Geometry Ratios & Proportional Relationships Statistics & Probability Expressions & Equations Statistics & Probability Statistics & Probability Statistics & Probability Operations & Algebraic Thinking Counting & Cardinality Geometry Operations & Algebraic Thinking Operations & Algebraic Thinking Measurement & Data Geometry Operations & Algebraic Thinking Statistics & Probability Geometry Operations & Algebraic Thinking Statistics & Probability Geometry Expressions & Equations Algebra Statistics & Probability Geometry Statistics & Probability Geometry Geometry Measurement & Data Operations & Algebraic Thinking Measurement & Data Geometry Measurement & Data Operations & Algebraic Thinking Measurement & Data Geometry Statistics & Probability Operations & Algebraic Thinking Statistics & Probability Geometry Statistics & Probability Expressions & Equations Geometry Statistics & Probability Functions Statistics & Probability Algebra Operations & Algebraic Thinking Geometry Geometry Statistics & Probability Operations & Algebraic Thinking Operations & Algebraic Thinking Operations & Algebraic Thinking Geometry Statistics & Probability Statistics & Probability Statistics & Probability Geometry Geometry Geometry Geometry Geometry Geometry Geometry Geometry Measuring Up Part and Whole Party Time Perfect Pair Pick a Pocket Piece It Together Polly Gone Rod Trains Slice and Dice Sorting the Mix Geometry Counting & Cardinality Squirreling It Operations & Away Algebraic Thinking Surrounded Geometry and Covered The Shape of Geometry Things Expressions & Equations Geometry Expression & Equations; Algebra Expressions & Equations; Algebra Functions Algebra Expressions & Equations; Algebra The Number System Statistics & Probability © Noyce Foundation 2014. This work is licensed under a Creative Commons Attribution‐NonCommercial‐NoDerivatives 3.0 Unported License (http://creativecommons.org/licenses/by‐nc‐nd/3.0/deed.en_US). 2 The Wheel Shop Operations & Algebraic Thinking Through the Counting & Grapevine Cardinality Tri‐ Triangles Operations & Algebraic Thinking What's Your Geometry Angle? William’s Geometry Polygons Operations & Algebraic Thinking Measurement & Data Operations & Algebraic Thinking Geometry Geometry Expressions & Equations Algebra Algebra Algebra Statistics & Probability Operations & Algebraic Thinking Expressions & Equations Geometry Statistics & Probability Expressions & Equations Statistics & Probability Expressions & Equations Statistics & Probability Functions Expressions & Equations Geometry Expressions & Equations Geometry Geometry Geometry © Noyce Foundation 2014. This work is licensed under a Creative Commons Attribution‐NonCommercial‐NoDerivatives 3.0 Unported License (http://creativecommons.org/licenses/by‐nc‐nd/3.0/deed.en_US). 3