Grade 1
The following curriculum focal points and related connections are the recommended content emphases for mathematics in grade 1. It is essential that these focal points be addressed in contexts that promote problem solving, reasoning, communication, making connections, and designing and analyzing representations.
Grade 1 Curriculum Focal Points
Number and Operations and Algebra: Developing understandings of addition and subtraction and strategies for basic addition facts and related subtraction facts.
Children develop strategies for adding and subtracting whole numbers on the basis of their earlier work with small numbers. They use a variety of models, including discrete objects, length-based models (e.g. length of connecting cubes), and number lines, to model “part-whole”, “adding to”, “taking away from”, and “comparing” situations to develop an understanding of the meanings of addition and subtraction and strategies to solve such arithmetic problems. Children understand the connections between counting and the operations of addition and subtraction (e.g., adding two is the same as “counting on” two). They use properties of addition (commutativity and associativity) to add whole numbers, and they create and use increasingly sophisticated strategies based on these properties e.g., “making tens”) to solve addition and subtraction problems involving basic facts. By comparing a variety of solution strategies, children relate addition and subtraction as inverse operations.
Activities:
Can be viewed at my colleague's blog at http://teachernormas.blogspot.com/Number and Operations: Developing an understanding of whole number relationships, including grouping in tens and ones
Children compare and order whole numbers (at least to 100) to develop an understanding of and solve problems involving the relative size of these numbers. They think of whole numbers between 10 and 100 in terms of groups of tens and ones (especially recognizing the numbers 11 to 19 as 1 group of ten and particular numbers of ones). They understand the sequential order of the counting numbers and their relative magnitudes and represent numbers on a number line.
Activities:
1. Compare and order whole numbers (at least to 100)
(a)
(b)
(c)
2. Think of whole numbers between 10 – 100 in terms of groups of tens and ones.
(a)
(b)
3. Sequential order of the counting numbers.(a)
(b)
(c)
