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Week 2:  Digging Deeper into Division
4 Days

Week 1        Week 2        Week 3        Week 4
Picture
Math Expressions, Unit 1
Picture
Introducing Division
THE WEEK AT-A-GLANCE
  • ​17 Kings and 42 Elephants
  • ME Unit 1, Lesson 1.9 - Multiply and Divide with 2s, 5s, 9s, and 10s
  • ME Unit 1, Lesson 1.10 - Multiply and Divide with 3
  • ME Unit 1, Lesson 1.12 - Multiply and Divide with 4
DO ANYTIME MATH WORKSHOP OR MATH MENU IDEAS

Picture
CA Common Core Standards:  Operations and Algebraic Thinking

CCSS.MATH.CONTENT.3.OA.A.2
Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each. For example, describe a context in which a number of shares or a number of groups can be expressed as 56 ÷ 8.
Understand properties of multiplication and the relationship between multiplication and division.
CCSS.MATH.CONTENT.3.OA.B.5
Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)
CCSS.MATH.CONTENT.3.OA.B.6
Understand division as an unknown-factor problem. For example, find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8.
Multiply and divide within 100.
CCSS.MATH.CONTENT.3.OA.C.7
Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.

DO ANYTIME MATH WORKSHOP OR MATH MENU IDEAS

Engaging Lesson & Notes

Lesson 1
Source
Introducing Division by Marilyn Burns, Chapter 6, p. 62

17 Kings and 42 Elephants
Margaret Mahy's book 17 Kings and 42 Elephants employs playful, rhythmic language in the context of a royal procession through an exotic jungle.  The story then becomes a springboard for a division problem with remainders.  The students figure out how seventeen kings can share taking care of forty-two elephants.

Math Focus Points
  • Fair sharing model of division.
  • Interpreting remainders.

Formative Assessment

​Practice


​Materials

17_kings_and_42_elephants.pdf
File Size: 547 kb
File Type: pdf
Download File

17_kings_and_42_elephants.pptx
File Size: 14140 kb
File Type: pptx
Download File

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Engaging Lesson & Notes

Lesson 2
Math Expressions, Unit 1, Lesson 1.9, TE p. 83

Multiply and Divide with 2s, 5s, 9s, and 10s (it's a review)

Math Focus Points
  • Build fluency with 2s, 5s, 9s, and 10s multiplications and divisions.

Formative Assessment

​Practice


​Materials

Math Workshop Items

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Engaging Lesson & Notes

Lesson 3
Math Expressions, Unit 1, Lesson 10, p. 89

Multiply and Divide with 3

Math Focus Points
  • Look for patterns in and practice 3s count-bys, multiplications, and divisions and learn a new strategy for finding products for multpliers greater than 5.
  • ​
Formative Assessment

​Practice


​Materials
List materials and then drag file elements below for uploading the actual files as needed.

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Engaging Lesson & Notes

Lesson 4
Math Expressions, Unit 1, Lesson 12, TE p. 109

Multiply and Divide with 4

Math Focus Points
  • Look for patterns in 4s multiplications and count-bys and learn a strategy for finding 4s count-bys and solving problems through 4s.

Formative Assessment

​Practice


​Materials

Math Workshop Items

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