Overview: Students develop strategies for adding and subtracting whole numbers based on their prior work with small numbers. They use a variety of models, including discrete objects and length-based models, to model add-to, take-from, put-together, apart, and compare situations to develop meaning for and strategies to solve the operations of addition and subtraction. By comparing a variety of solution strategies, children build their understanding of the relationship between addition and subtraction. Students develop, discuss and use efficient, accurate and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers to develop an understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones. Students develop an understanding of the meaning and processes of measurement, including underlying concepts such as iterating. Students compose and decompose plane or solid figures and build understanding of part-whole relationships as well as the properties of the original and composite shapes. These understandings will help to develop the background for measurement and for initial understandings of properties such as congruence and symmetry. In first grade, students will be working throughout the year on: Mathematical Content Mathematical Practices Operations and Algebraic Thinking Making sense of problems and Solving challenging addition and persevering in solving them subtraction word problems in situations Reasoning abstractly and of adding to, taking from, putting quantitatively together, taking and comparing Constructing viable arguments Quickly and accurately adding with a and critiquing the reasoning of sum of 10 or less and subtracting from a others number 10 or less Modeling with mathematics Number and Operations Understanding what the digits mean in Using appropriate tools two-digit numbers strategically Using understanding of place value to add Attending to precision and subtract Looking for and making use of Measurement and Data structure Measuring lengths of objects by using a shorter Looking for and expressing object as a unit of length regularity and repeated Telling and writing time to the nearest half-hour reasoning Identifying coins and their values; finding equivalent values Representing and interpreting data Geometry Making composite shapes by joining shapes together, and dividing circles and rectangles into halves and fourths
Overview: Students develop strategies for adding and subtracting whole numbers based on their prior work with small numbers. They use a variety of models, including discrete objects and length-based models, to model add-to, take-from, put-together, and compare situations to develop meaning for and strategies to solve the operations of addition and subtraction. By comparing a variety of solution strategies, children build their understanding of the relationship between addition and subtraction. Students develop, discuss and use efficient, accurate and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers to develop an understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones. Students develop an understanding of the meaning and processes of measurement, including underlying concepts such as iterating. Students compose and decompose plane or solid figures and build understanding of part-whole relationships as well as the properties of the original and composite shapes. These understandings will help to develop the background for measurement and for initial understandings of properties such as congruence and symmetry. In first grade, students will be working throughout the year on: Mathematical Content Mathematical Practices Operations and Algebraic Thinking Solving challenging addition and subtraction word problems in situations of adding to, taking from, putting together, taking apart, and comparing Quickly and accurately adding with a sum of 10 or less and subtracting from a number 10 or less Number and Operations Understanding what the digits mean in two-digit numbers Using understanding of place value to add and subtract Measurement and Data Measuring lengths of objects by using a shorter object as a unit of length Telling and writing time to the nearest half-hour Identifying coins and their values; finding equivalent values Representing and interpreting data Geometry Making composite shapes by joining shapes together, and dividing circles and rectangles into halves and fourths Making sense of problems and persevering in solving them Reasoning abstractly and quantitatively Constructing viable arguments and critiquing the reasoning of others Modeling with mathematics Using appropriate tools strategically Attending to precision Looking for and making use of structure Looking for and expressing regularity and repeated reasoning
Grade1%20Curr%20Overview9.16.docx