# Introducing THREE addends by building and drawing: Lesson/Activity Set

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Common Core Standards
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3 MB|19 pages
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Within this product, you will find the items I use in my own classroom to help students begin to add three addends. In this activity, students will roll number cubes and then build and/or draw to add; rolling their number sentences helps it to feel more like a game, and less like a regular old worksheet.

I use this lesson to BUILD A FOUNDATION FOR work with three addends for other purposes, such as these listed in CCSS:

CCSS.Math.Content.1.OA.A.2Solve 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…

CCSS.Math.Content.1.OA.B.3Apply properties of operations as strategies to add and subtract.2 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.)

And for developing stronger addition skills:
CCSS.Math.Content.1.OA.C.6Add and subtract within 20, demonstrating fluency for addition and subtraction within 10....

And finally, to build a solid understanding of the vocabulary ‘sum’ and ‘addend’ for later teaching on the topic of ‘missing sum’ and ‘missing addend:’
CCSS.Math.Content.1.OA.D.8Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.

If you are interested in the sequence of lessons that helped to build up to this particular lesson, or lessons that follow and lead to the CCSS listed above please see my store or contact me.

Suggested lesson outline
Addend vs. sum example cards for labeling
Vocabulary cards: Addend, Sum, Efficient, Efficient Counting, Counting On
Student activity sheet
Exit Ticket
Number card sets, in case you don’t have number cubes

However you use this ‘Introducing THREE addends by building and drawing Lesson/Activity Set, I genuinely hope that you find these materials helpful in your classroom!

Happy teaching & happy learning.

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19 pages
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