• # Grade 3 Math Curriculum Grade 3 Math Course Description: In Grade 3, instructional time will focus on five critical areas: (1) developing understanding of multiplication and division and strategies for multiplication and division within 100 (2) developing understanding of fractions, especially unit fractions (fractions with numerator 1); (3) developing understanding of the structure of rectangular arrays and of area and perimeter; (4) describing and analyzing two-dimensional shapes; and (5) solving problems involving measurement and estimation of intervals of time, money, liquid volumes, masses, and lengths of objects. (PDE, Standards Aligned System) Our core math resource in grades K-5 is Bridges in Mathematics, which was adopted by our Board of School Directors in the winter of 2018 for implementation in the 2018-19 school year.  "Bridges in Mathematics is a comprehensive PK–5 curriculum that equips teachers to fully implement the Common Core State Standards for Mathematics in a manner that is rigorous, coherent, engaging, and accessible to all learners. The curriculum focuses on developing students’ deep understandings of mathematical concepts, proficiency with key skills, and ability to solve complex and novel problems. Bridges blends direct instruction, structured investigation, and open exploration. It taps into the intelligence and strengths of all students by presenting material that is as linguistically, visually, and kinesthetically rich as it is mathematically powerful." For more information about Bridges in Mathematics visit the and for additional information for families, visit the Bridges Family Support page. Family Letter Welcome Standards for Mathematical Practice (Included in all units) Make sense of problems and persevere in solving them. Attend to precision. Reason abstractly and quantitatively. Construct viable arguments and critique the reasoning of others. Model with mathematics. Use appropriate tools strategically. Look for and make use of structure. Look for and express regularity in repeated reasoning. Unit 1 Addition and Subtraction Patterns CC.2.1.3.B.1 Apply place value understanding and properties of operations to perform multi-digit arithmetic.   CC.2.2.3.A.4 Solve problems involving the four operations, and identify and explain patterns in arithmetic. Unit 1 Family Letter Unit 2 Introduction to Multiplication CC.2.1.3.B.1 Apply place value understanding and properties of operations to perform multi-digit arithmetic.   CC.2.2.3.A.1 Represent and solve problems involving multiplication and division. CC.2.2.3.A.2 Understand properties of multiplication and the relationship between multiplication and division. CC.2.2.3.A.3 Demonstrated multiplication and division fluency. CC.2.2.3.A.4 Solve problems involving the four operations, and identify and explain patterns in arithmetic. Unit 2 Family Letter Unit 3 Multi-Digit Addition and Subtraction CC.2.1.3.B.1 Apply place value understanding and properties of operations to perform multi-digit arithmetic.   CC.2.2.3.A.4 Solve problems involving the four operations, and identify and explain patterns in arithmetic. CC.2.4.3.A.3 Solve problems and make change involving money using a combination of coins and bills.   Unit 3 Family Letter Unit 4 Measurement and Fractions CC.2.4.3.A.1 Solve problems involving measurement and estimation of temperature, liquid, volume, mass and length. CC.2.4.3.A.2 Tell and write time to the nearest minute and solve problems by calculating time intervals. CC.2.4.3.A.5 Determine the area of a rectangle and apply the concept to multiplication and to addition. CC.4.3.4.A.4 Represent and interpret data using tally charts, tables, pictographs, line plots and bar graphs. CC.2.4.3.A.6 Solve problems involving perimeters of polygons and distinguish between linear and area measures. CC.2.1.3.C.1 Explore and develop an understanding of fractions as numbers.   CC.2.3.3.A.2 Use the understanding of fractions to partition shapes into parts with equal areas and express the area of each part as a unit fraction of the whole. Unit 4 Family Letter Unit 5 Multiplication, Division and Area CC.2.2.3.A.1 Represent and solve problems involving multiplication and division. CC.2.2.3.A.2 Understand properties of multiplication and the relationship between multiplication and division. CC.2.2.3.A.3 Demonstrated multiplication and division fluency. CC.2.2.3.A.4 Solve problems involving the four operations, and identify and explain patterns in arithmetic. CC.2.4.3.A.5 Determine the area of a rectangle and apply the concept to multiplication and to addition. CC.2.4.3.A.6 Solve problems involving perimeters of polygons and distinguish between linear and area measures. Unit 5 Family Letter Unit 6 Geometry CC.2.3.3.A.1 Identify, compare, and classify shapes and their attributes. Unit 6 Family Letter Unit 7 Extending Multiplication and Fractions CC.2.1.3.B.1 Apply place value understanding and properties of operations to perform multi-digit arithmetic.   CC.2.2.3.A.1 Represent and solve problems involving multiplication and division. CC.2.2.3.A.2 Understand properties of multiplication and the relationship between multiplication and division. CC.2.2.3.A.3 Demonstrated multiplication and division fluency. CC.2.2.3.A.4 Solve problems involving the four operations, and identify and explain patterns in arithmetic. CC.2.1.3.C.1 Explore and develop an understanding of fractions as numbers.   CC.2.3.3.A.2 Use the understanding of fractions to partition shapes into parts with equal areas and express the area of each part as a unit fraction of the whole. CC.2.4.3.A.5 Determine the area of a rectangle and apply the concept to multiplication and to addition. Unit 7 Family Letter Unit 8 Bridge Design and Data Collection and Analysis CC.2.4.3.A.4 Represent and interpret data using tally charts, tables, pictographs, line plots, and bar graphs. Unit 8 Family Letter