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Unit 1, Lesson 4 Line Math Puzzles

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Goals Develop mathematical reasoning Practice addition facts

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What We Will Learn Today We are going to learn to solve line math puzzles and then you will create your own. We will practice our addition by making groups of ten.

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Teaching the Activity This line math puzzle on URG pg. 51 is made of boxes connected with lines. What is the sum of each line?

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Teaching the Activity What pattern do you see? What number is in all three sums? What other patterns do you see?

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Line math puzzles Each line of boxes connected by a dotted line in a line math puzzle has the same sum Arrange the numbers 1, 2, 3, 4, and 5 on the top puzzle on Line Math Puzzles 1 activity page 15 so that each line totals 9. Write the two number sentences on the side of the page next to the puzzles

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Line Math Puzzles Each line of boxes connected by a dotted line in a line math puzzle has the same sum Arrange the numbers 5, 6, 7, 8 and 9 on the bottom puzzle on Line Math Puzzles 1 activity page 15 so that each line totals 21. Write the two number sentences on the side of the page next to the puzzles.

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Line Math Puzzles When you complete DAB Pg. 15, you may do the puzzles on DAB Pg. 17. Follow the directions for the numbers to use and the sum for each line.

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What We Learned Today We learn how to solve line math puzzles. We practiced our addition by making groups of ten.

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Extension Make your own design for the line and box structures of the puzzle Create line math puzzles based on a new rule: Every line has a different sum Use 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 to do a line math puzzle

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