Essential Questions:
Unit 2 instructional time is focused on these priority standards:
1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13  4 = 13  3  1 = 10  1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12  8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
1.OA.1 Represent and solve problems involving addition and subtraction.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.MD.4 Represent and interpret data. 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.
 How are Addition and Subtraction related?
 How can fact strategies help in math?
 Real World Essential Question: "How will know if you have enough food items to donate to the West Suburban Community Pantry in Woodridge?"
 Addition and Subtraction have an inverse relationship.
 Every subtraction fact has a related addition fact. They should be able to explain that 8+4=12 therefore 124=8
Unit 2 instructional time is focused on these priority standards:
1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13  4 = 13  3  1 = 10  1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12  8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
1.OA.1 Represent and solve problems involving addition and subtraction.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.MD.4 Represent and interpret data. 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 2 instruction is supported by these standards:
1.OA.A.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.B.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.B.4 Understand and apply properties of operations and the relationship between addition and subtraction. Understand subtraction as an unknownaddend problem.
1.OA.C.5 Add and subtract within 20. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
1.OA.D.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.D.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.A.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.B.3 Tell and write time in hours and halfhours using analog and digital clocks.
1.MD.C.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.
1.OA.A.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.B.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.B.4 Understand and apply properties of operations and the relationship between addition and subtraction. Understand subtraction as an unknownaddend problem.
1.OA.C.5 Add and subtract within 20. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
1.OA.D.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.D.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.A.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.B.3 Tell and write time in hours and halfhours using analog and digital clocks.
1.MD.C.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.
What to TeachUnit 2 Outline
Preassessment Spanish Preassessment Reporting Sheet Introduce Real World Experience Real World Experience Task 1 Topic 1: Addition concepts & strategies within 20 (2 wks)

Lesson Ideas 
Student PRactice 
Topic 2: Subtractison concepts & strategies within 20 (2 wks)
Post Assessment & Reflection Part A 
Topic 3: Addition concepts & strategies with 3 addends, a missing addend, and story problems (1 wk)

Find the Missing Number  Illustrative Mathematics Task
Kiri's Mathmatics Match Game  Illustrative Mathematics Task 20 Tickets  Illustrative Mathematics Task At the Park  Illustrative Mathematics Task Snowman Slide game True False Number Sense activity "Math Mountains" Strategy Video The Very Hungry Caterpillar  3 addends Illustrative Mathematics Task Dasies in Vases  Illustrative Mathematics Task 
Thinking Blocks Jr.  online bar modeling practice for word problems
Word Problem Generator IXL.com practice

Topic 4: Subtraction concepts & strategies with story problems within 20 (1 wk)

Bedtime Math websiteleveled problem of the day
Thinking Blocks Jr.  online bar modeling practice for word problems Word Problem Generator IXL.com practice

Represent and Interpret Data within 20 (ongoing)
Real World Experience Task 3 & 4 