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 Unit Overview      Week 1        Week 2        Week 3        Week 4        Week 5      Week 6      Week 7


Week 3:  Multiplying Tens
December 5 - 9, 2016

Curriculum Resources:
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Investigations, Unit 3, Investigation 3
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Picture
Picture
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Math Expressions, Unit X
THE WEEK AT-A-GLANCE
  • Investigations Unit 3 Session 3.1 Building Multiple Towers 
  • ​Investigations Unit 3 Session 3.2 Multiplying Groups of 10 
  • Investigations Unit 3 Session 3.3 Multiplying 2-Digit Numbers 
  • Investigations Unit 3 Session 3.4 Assessment:Multipliction Combinations
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CA Common Core Standards:  Number and Operations in Base Ten

CCSS.MATH.CONTENT.4.NBT.A.1
Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division.
CCSS.MATH.CONTENT.4.NBT.A.2
Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.
CCSS.MATH.CONTENT.4.NBT.A.3
Use place value understanding to round multi-digit whole numbers to any place.
CCSS.MATH.CONTENT.4.NBT.B.4
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
CCSS.MATH.CONTENT.4.NBT.B.5
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
CCSS.MATH.CONTENT.4.NBT.B.6
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
*Grade 4 expectations in this domain are limited to whole numbers less than or equal to 1,000,000.
​

Engaging Lesson & Notes

Lesson 1
​
Source
Investigations Student Activity Book
Math Solutions, Number Talks 
Lessons for Extending Multiplication Grades 4-5, Marilyn Burns pp. 164


​​​Materials
M8, Practicing with Multiplication Cards
M47, 300 Chart (one per student)
Chart paper: prepare and post a list of "Starting Numbers for multiple Towers"


Lesson
Building Multiple Towers

Math Focus Points
  • Understand the effects of multiples of 10
  • Finding multiples of 2-digit numbers
  • Describing a sequence of multiples in order to predict other multiples

Number Talk 
What is the relationship between 3 x 4 and 3 x 40? 

​Teaching Tips
Choose landmark number of 30. Ask volunteers to give you multiples of 30. Allow students to give all possible answers. Ask "How do we know we've found all the multiples of 30?" Allow students to answer. (If needed, practicing using another landmark number). Have students complete SAB pp. 37-38.

Extend thinking: Ask students to imagine they had 30 oranges that need to be put in boxes. Each box must hold the same amount of oranges. How many different kind of boxes can they make to fit all 30 oranges?


Differentiation

Formative Assessment
Exit Slip: Provide multiples of 50
​
Homework

SAB pp. 39-40​

Supplemental Lessons or Activities

Video on Khan academy explaining landmark numbers & multiplication.

Use the 300 Chart (pp. M47) and calculators to find multiples of land numbers. 
​

Use "Times 10 Game Boards"

Comments, Photos, Videos . . .



Engaging Lesson & Notes

Lesson 2
​
Source
Investigations Student Activity Book
Math Solutions, Number Talks 
Lessons for Extending Multiplication Grades 4-5, Marilyn Burns pp. 164

​

​​Materials
SAB pp. 41-43
M7
M47
​
Chart paper: prepare and post a list of "Starting Numbers for multiple Towers"

Lesson

Multiplying Groups of 10
​

Math Focus Points
  • Understand the effects of multiples of 10
  • Representing a multiplication problem with pictures, diagrams, or models
  • Comparing visual representations of multiplication situations

Number Talk 
How are these two problems different: 4 x 6 and 40 x 6? (​TE pp. 106)

Teaching Tips

​​
"Adding a Zero" requires an understanding of the process of multiplying by 10. See Khan Academy video for support.

Practice

​Students solve sets of related problems and represent them on grid paper (M7) 

Formative Assessment
Exit ticket: __, 126, 108, 90, ___, 54, 36, 18
What numbers are missing? How do you know?


Homework

SAB pp. 44-46

Supplemental Lessons or Activities

Video on Khan academy explaining landmark numbers & multiplicatio

Comments, Photos, Videos . . .


Engaging Lesson & Notes

Lesson 3
​
Source
Investigations Student Activity Book
Math Solutions, Number Talks 
Lessons for Extending Multiplication Grades 4-5, Marilyn Burns pp. 164

​

​​Materials
SAB pp. 47-48
M7
M47


Lesson

Multiplying 2-Digit Numbers
​

Math Focus Points
  • Understand the effects of multiples of 10
  • Multiplying using multiples of 10 
  • Comparing visual representations of multiplication situations

Number Talk 
15 x 13 
How can multiples of 10 help us solve this problem?


Teaching Tips

"Counting Around the Class:" Students can count in 15s. What is the relationship between these numbers? What do you notice?

Practice

Multiplying with groups of 10 and related numbers (20, 30, 40, etc)
M.E (Math Expressions) - Homework and Remembering- page 51 for extra practice.

Formative Assessment
Exit ticket: 240
​How many 30s did I count to get to this landmark number?


Homework

Student Activity Book pp. 49-50

Supplemental Lessons or Activities

Math Expressions Activity Cards 2-12
*Intervention
*On level
* Challenge
OBS: you can use the cards as an item for the math menu

Comments, Photos, Videos . . .

Picture
Picture

Engaging Lesson & Notes

Lesson 4
Source
Investigatios session 3.4 

Lesson Title
 Assesment of Multiplication Combinations

Math Focus Points
*Reviewin multiplication combination to 12 x 12
*Understanding the effect of nultiplying by a multiple of 10
*comparing visual representations of multiplication situations
​Number Talk
5x6
5x60
What does it mean to add a zero?


Formative Assessment
Master M50


​Practice
Student activity book page 51
​Homework

Play game at home or math tiles
​Materials
M15

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

Math Workshop Items

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Comments, Photos, Videos . . .

Picture
Picture

Engaging Lesson & Notes

Lesson 5
Source

Lesson Title
 Lesson Description

Math Focus Points


Number Talk

​Formative Assessment


​Practice


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

Math Workshop Items

Comments, Photos, Videos . . .

Assessment

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