Third Grade Mathematics

FOCUS CONCEPTS: Operations & Algebraic Thinking (multiplication and division); Number & Operations in Base Ten (multi-digit addition and subtraction); Number & Operations—Fractions; Measurement & Data; Geometry. SKILLS: Represent and solve problems involving multiplication & division; Understand properties of multiplication and the relationship between multiplication and division; Multiply and divide within 100; Solve problems involving the four operations, and identify and explain patterns in arithmetic; Use place value understanding and properties of operations to perform multi‑digit arithmetic; Develop understanding of fractions as numbers; Solve problems involving measurement and estimation of intervals of time; Represent and interpret data; Geometric measurement: understand concepts of area and relate area to multiplication and to addition; Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures; Reason with shapes and their attributes. MATHEMATICAL PRACTICES: Make sense of problems and persevere in solving them; Reason abstractly and quantitatively; Construct viable arguments and critique the reasoning of others; Model with mathematics; Use appropriate tools strategically; Attend to precision; Look for and make use of structure; Look for and express regularity in repeated reasoning.