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Everyday Math Grade 1 Lesson 9.2

Everyday Math Grade 1 Lesson 9.2. 9.2 Adding and Subtracting Tens Objective: To provide opportunities to develop proficiency in adding and subtracting 10's. Math Journal 2---- pages 179 Home Link for 9.1, page 255 Math Masters 249, 254, 256, 257 slate 1 die per partnership

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Everyday Math Grade 1 Lesson 9.2

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  1. Everyday Math Grade 1 Lesson 9.2

  2. 9.2 Adding and Subtracting Tens Objective: To provide opportunities to develop proficiency in adding and subtracting 10's. Math Journal 2---- pages 179 Home Link for 9.1, page 255 Math Masters 249, 254, 256, 257 slate 1 die per partnership My Reference Book, pages 142 and 143 Number-Grid Poster game markers stick-on notes Class Data Pad Minute Math+ page 42 base-10 blocks

  3. Demonstrate subtracting 10's on this interactive 100 chart. SPLAT SQUARE

  4. Mental math and Reflexes Write the number on your slate and circle the digit in the tens place. 39 80 12 34 55 43 Tabs are all click and reveal.

  5. Math Message Be ready to show how to use the number grid to solve these problems. 15 + 8 = _______ 24 + 10 = _______ 32 - 6 = _______ 28 - 10 = _______

  6. Page 179

  7. Find charts like these inside the covers of your math journal. How are these charts alike and different? How are they alike and different from the ones in your journal?

  8. Number Grid for Math Message Follow-Up and Adding and Subtracting 10's mentally TG Page 748

  9. My Reference Book Pages 142 and 143 Number Grid Game Materials: 1 number grid 1 six-sided die 1 game marker per player Players: 2 or more Skill: Counting on the number grid. Object of the game: To land on 110 with an exact roll. Directions: 1. Players put their markers at 0 on the number grid. 2. Take turns. When it is your turn: Roll the die Use the table to see how many spaces to move your marker. Move your marker that many spaces. 3. Continue playing. The winner is the first player to land on 110 with an exact roll. Roll Spaces 1 or 10 2 or 20 3 4 5 6 Enrichment: Use 2 dice. For rolls of 7 to 12, go that many spaces, respectively.

  10. Identifying How Many Letters are in Your First Name Line Plot Graph First, make the graph with stick on notes and the Class Data Pad. Then, use the red blocks to fill in this line plot graph. 2 3 4 5 6 7 8 9 10+

  11. Math Masters, page 254 Using Rules to Solve Problems in in out Use number grids to solve to practice using the grid. 1 Rule 4 Add 1 7 10 out 27 39 28 9 38 6 2 5

  12. Math Masters page 254 Using Rules to Solve Problems in in out Rule + 10 out 9 6 7 8 5 3 2 4 1 0 10 11 12

  13. Math Masters Page 254 Using Rules to Solve Problems Use number grids to solve.

  14. Writing and Reasoning: What is the pattern in the sums in Problem 2 on page 179?

  15. Home Link 9.2, page 255

  16. Adding and Subtracting 10's Math Masters, page 256 Explore digit patterns when counting forward and backward by multiples of 10 using base-10 blocks. What pattern do you see when you are finished with the page? 24 62 34 72 54 52 64 12

  17. Finding a Pattern for 9's Math Masters Page 257 (next slide) Demonstrate 9s pattern on the number grid.

  18. Math Masters Page 257 Number Grid Short-Cuts Finding a Pattern for 9

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