Unit 3 Topic 3: Working with Addition and Subtraction
Curriculum & Pacing Topic 1 Topic 2 Topic 3 Topic 4
Standards




Bears in a Cave
Relationship between addition and subtraction. You can refer to and revisit this lesson all year. Bears in a Cave Lesson Recording Book  Spanish Recording Book  English 
Student Samples:
Seesaw Video #1  Sample problem with bear emojis Seesaw Video #2  sample problem on whiteboard 
Trimester 1 Assessment Halfsheet
Give OAT 3 when you have gone over Three Towers and how equations can be written to represent the towers with addition and subtraction.
Give OAT 3 when you have gone over Three Towers and how equations can be written to represent the towers with addition and subtraction.
3.1 Story Problems
Story Problems
 Visualizing and retelling the action in addition situations and subtraction situations involving removal
 Developing strategies for solving addition and subtraction (removal) problems
 Recording solutions to a problem
3.2 Today's Number
Today's Number
 Generating equivalent expressions for a number
 Using numbers and standard notation (>, <, +, −, =) to record
 Connecting written numbers and standard notation
 (>, <, +, −, =) to the quantities and actions they represent
3.3 Adding and Subtracting: Story Problems and Games
Adding and Subtracting: Story Problems and Games
 Generating equivalent expressions for a number
 Using numbers and standard notation (>, <, +, −, =) to record
 Developing strategies for solving addition and subtraction (removal) problems
3.4 Strategies for Addition
Strategies for Addition
 Generating equivalent expressions for a number
 Developing strategies for solving addition and subtraction (removal) problems
 Recording solutions to a problem
3.5 Assessment: How Many Books?
Assessment: How Many Books?
 Developing strategies for solving addition and subtraction (removal) problems
 Seeing that subtracting the same two numbers (e.g., 6 from 10) results in the same difference regardless of context (e.g., number and dot cubes, cards, objects)
 Recording solutions to a problem