Essential Questions:
Unit 1 instructional time is focused on these priority standards:
1.OA.C.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.A.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.C.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 do you know if you would have enough tickets to buy a prize at Chuck E. Cheese? (This relates to the Real World Experience.)
 What does it mean to add?
 What does it mean to subtract?
 Why is it important to learn fact strategies
 Addition means to put together, join, combine two groups, count on, and compare.
 Subtraction means to separate from a whole, take away, count backwards and compare.
 Fact Strategies provide a bridge from understanding to concept of the meaning of addition and subtraction to quickly solve problems.
Unit 1 instructional time is focused on these priority standards:
1.OA.C.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.A.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.C.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 1 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.C.3 Tell and write time in hours and halfhours using analog and digital clocks.
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.C.3 Tell and write time in hours and halfhours using analog and digital clocks.
What to teachUnit 1 Outline
Preassessment Spanish Preassessment reporting sheet Introduce Real World Experience Topic 1: Reviewing Number Sense (1 wk)

Lesson IdeasGive Them Two Problems teaching strategy
Number Sense Routines What Exactly is Subitizing Quick Subitizing activity Activities to Develop Visual Sense of 10 More Activities to Develop Sense of 10 Reckenrek activities Part Part Whole How I See Number to 5 Ten Frame activities More Ten Frame Activities Ten Frame Mat (legal size) Double Ten Frame Mat Grab and Count activity Video: Subitizing on a Ten Frame Subitizing Instruction Resources Math Songs: Number Line Video: Counting Game to 100 Greg Tang Counting activity 
Student Practice 
Represent and Interpret Data within 10 (ongoing)

Favorite Ice Cream  Illustrative Mathematics Task
Weather Graph Data  Illustrative Mathematics Task 
Problem Solving With Addition and Subtraction vocabulary within 10 (ongoing)

Taking Apart the KeyWord Strategy  blog post
Illustrative Math Tasks for 1.OA.1 K5 Math activities for 1.OA Greg Tang Sum & Difference Puzzles activity Thinking Blocks Jr.  online bar modeling practice for word problems 
Word Problem Generator
Bedtime Math websiteleveled problem of the day Houghton Mifflin Leveled Practice wkst unit 1
unit 2
unit 6

Telling Time (ongoing)
