# ALEX Lesson Plan

## Where Oh Where Has My Addend Gone?

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This lesson provided by:
 Author: Summer Payne System: Mobile County School: Pearl Haskew Elementary The event this resource created for: CCRS General Lesson Information
 Lesson Plan ID: 33147 Title: Where Oh Where Has My Addend Gone? Overview/Annotation: Students will use number bonds and counters as a strategy for finding the missing addend. Students will become aware of the relationship between addition and subtraction. They will also use counting as it is related to addition and subtraction.This is a College- and Career-Ready Standards showcase lesson plan.
Associated Standards and Objectives
Content Standard(s):
 Mathematics MA2015 (2016) Grade: 1 3 ) Apply properties of operations as strategies to add and subtract. (Students need not use formal terms for these properties.) [1-OA3] Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known (Commutative property of addition)                 To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12 (Associative property of addition) Mathematics MA2015 (2016) Grade: 1 4 ) Understand subtraction as an unknown-addend problem. [1-OA4] Example: Subtract 10 - 8 by finding the number that makes 10 when added to 8. Mathematics MA2015 (2016) Grade: 1 5 ) Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). [1-OA5] Alabama Alternate Achievement Standards AAS Standard: M.AAS.1.5- Represent addition and subtraction of 1 more or 1 less from a number 1 to 15. Mathematics MA2015 (2016) Grade: 1 8 ) Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. [1-OA8] NAEP Framework NAEP Statement:: 4NPO3f: Solve application problems involving numbers and operations.

Local/National Standards:

Primary Learning Objective(s):

The students will solve missing addend problems using different strategies such as number bonds, counting on, and relating addition and subtraction facts. The students will relate counting to addition and subtraction. The students will solve real-world problems involving missing addends.