## Unit 1

**1.OA.2**Represent and solve problems involving addition and subtraction. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.3**Understand and apply properties of operations and the relationship between addition and subtraction. Apply properties of operations as strategies to add and subtract.

**1.OA.4**Understand and apply properties of operations and the relationship between addition and subtraction. Understand subtraction as an unknown-addend problem.

**1.OA.5**Add and subtract within 20. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

**1.OA.7**Work with addition and subtraction equations. Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

**1.OA.8**Work with addition and subtraction equations.Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers.

**1.NBT.1**Extend the counting sequence. Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

**1.MD.3**Tell and write time in hours and half-hours using analog and digital clocks.

## Unit 2

**1.OA.2**Represent and solve problems involving addition and subtraction. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.3**Understand and apply properties of operations and the relationship between addition and subtraction. Apply properties of operations as strategies to add and subtract.

**1.OA.4**Understand and apply properties of operations and the relationship between addition and subtraction. Understand subtraction as an unknown-addend problem.

**1.OA.5**Add and subtract within 20. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

**1.OA.7**Work with addition and subtraction equations. Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

**1.OA.8**Work with addition and subtraction equations.Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers.

**1.NBT.1**Extend the counting sequence. Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

**1.MD.3**

**Tell and write time in hours and half-hours using analog and digital clocks.**

**1.MD.4**Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.

## Unit 3

**1.G.1**Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

**1.MD.3**Tell and write time in hours and half-hours using analog and digital clocks.

**1.OA.2**Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**Tell and write time in hours and half-hours using analog and digital clocks.**

1.MD.3

1.MD.3

**1.MD.4**Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.

## Unit 4

**1.OA.1 **Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.2**Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.7**Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

**Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.**

1.NBT.1

1.NBT.1

**1.MD.3**Tell and write time in hours and half-hours using analog and digital clocks.

**1.MD.4**Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.

## Unit 5

**1.OA.1**Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.2**Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

**1.OA.7**Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

**1.NBT.5**Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

**1.NBT.6**Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

**1.MD.3**Tell and write time in hours and half-hours using analog and digital clocks.

**1.MD.4**Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.