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

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Operations and Algebraic Thinking 1.OA 7.Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. //For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2. // TM 1.11.5, 1.11.6, 1.11.7
 * Work with addition and subtraction equations. **

List of resources: http://www.k-5mathteachingresources.com/1st-grade-number-activities.html