3rd Mult and Div Home Page

Weeks 1 - 2    Week 3    Weeks 4-5    Week 6    Week 7    Week 8    Week 9    Week 10
Multiplication and Division
Week 6
THE WEEK AT-A-GLANCE (5 Days)
  • ​ Investigations, Unit 5, Investigation Session 3.3 -  Finding the Number of Squares in an Array
  •  Multiples Exploration: (For ideas see Investigations Unit 5, Inv. 2, Sessions 2.1 and 2.2)
  • Lesson: Investigations Unit 5, Session 3.4 - Array Games, Part 1 - Play Factor Pairs (Combinations I Know/Combinations I Don't Know) 
  • Multiples Exploration:  (For ideas see Investigations Unit 5, Inv. 2, Sessions 2.1 and 2.2)
  • Lesson: Investigations Unit 5, Session 3.5 - Learning Multiplication Combinations
    ​





Student Practice Handbook Unit 5
Student Practice Handbook Unit 5-Spanish 
Day 1
Number Talk Choices (pg 210 in Number Talks Book)
300-269, 300-249, 300-99, 300-149

Lesson:  Investigations, Unit 5, Investigation Session 3.3 -  Finding the Number of Squares in an Array
Focus on ways to count arrays and ways to split arrays to strategically find the number of squares.
**Have students check array cards and make sure they are accurate and done well.**
With extra time - have them pull out the 1's, 5's, and 10's - put in a separate baggie - play array war.
​
Materials:
Chart paper
Arranging Chairs materials See Session 3.1.
Making Array Cards materials See Session 3.2.
Chart paper Write a list of the numbers up to 50 not yet on display.
 Day 2
(Prior to this day, students have made the array cards from Investigations, Unit 5, Investigation 3.2 and 3.3)
Number Talk Choices (pg 210 in Number Talks Book)
400-349, 400-299, 400-274, 200-199


Multiples Exploration: (For ideas see Investigations Unit 5, Inv. 2, Sessions 2.1 and 2.2)
  • Finding Patterns and Verbally Describing:  Using a 100 chart, students color in multiples of 5 then circle multiples of 10 on the same chart.  They notice patterns and verbally describe what they  notice.  Focus on precise description of the patterns they see.  For example, "Multiples of of 5 all end in 5 or 0."  Tomorrow they will write about these patterns.
  • You could also have students write out each factor pair with its matching equivalent repeated addition and product. (see Math Expressions Unit 1).  Notice patterns. (2 x 5 = 5 + 5 = 10)

Lesson: Investigations Unit 5, Session 3.4 - Array Games, Part 1 - Play Factor Pairs (Combinations I Know/Combinations I Don't Know) *Have students pull out the 1's, 5's, and 10's array cards.  Those are the factors (card sets) they will work with this week.*
  • Using arrays to find a product by skip counting by one of its dimensions
  • Identifying and learning multiplication combinations not yet known
  • Using known multiplication combinations to determine the product of more difficult combinations
Students play Factor Pairs with their array cards and identify multiplication facts they know and those they are working on.

Resources Masters:
M26, English Factor Pairs       Spanish:  R26   Read the rules in advance Make copies. (as needed)  
M27, English “Combinations I Know” and “Combinations I’m Working On”     Spanish:  R27    Make copies. (as needed) 
Array Cards (1 set per pair) - made in previous lessons

Workshop Choices 
  • Circles and Stars (War)
  • Factor Pairs - Combinations I Know/Am Working On
  • Array War
  • Multiple Patterns
  • Which Has More?
Day 3
Number Talk (pg 210)
500-449, 500-419, 500-299, 500-249

Multiples Exploration:  (For ideas see Investigations Unit 5, Inv. 2, Sessions 2.1 and 2.2)
  • Finding Patterns and Describing in Writing:  Students revisit the patterns they noticed in the multiples on the 100 chart.  Focus on precise written description of the patterns they see.  For example, "Multiples of of 5 all end in 5 or 0."


Lesson:  How Long, How Many (from Introducing Multiplication, p.77)

Workshop:
  • Circles and Stars (War)
  • Multiple Arrays - Math Expressions, On Level Activity Card, 1-3 (triangle) 
  • Factor Pairs - Combinations I Know/Am Working On
  • Array War
  • How Long,? How Many?
im_how_long_how_many.pdf
File Size: 1223 kb
File Type: pdf
Download File
Day 4
Number Talk (pg 210)
750-709, 750-599, 750-449,750-324

Multiples Exploration:  (For ideas see Investigations Unit 5, Inv. 2, Sessions 2.1 and 2.2)
  • Sharing what you found in multiples pattern:  Students take their shaded 100s charts and the written descriptions of patterns . . . to music, they walk around and stop when the music stops.  They share what they noticed.  Call on a few students to share out what their partners said.
Workshop:
  • Circles and Stars (War)
  • Multiple Arrays - Math Expressions, On Level Activity Card, 1-3 (triangle) 
  • Factor Pairs
  • Array War
  • Doubling Pot Problems
  • Which Has More (continued)
Day 5
Number Talk (pg 211)
50-29, 55-29, 55-48, 55-37


Lesson: Investigations Unit 5, Session 3.5 - Learning Multiplication Combinations

Materials:
​M28–M33, English Multiplication Cards         Spanish:  R28-33  Make copies. (1 set per student)
M34–M35, English Practicing with Multiplication Cards           Spanish:  R34-35  Make copies. (1 per student)
M37–M38, English Family Letter         Spanish:  R37-38  Make copies. (1 per student)
Array Cards (1 set per pair)
Envelopes or resealable plastic bags (1 per student)
Paper clips (1 per student)
Scissors (1 per student)
Chart paper Divide the chart paper into two columns and label them “Combinations We’re Working On” and “Start With.”

​Workshop:
  • Circles and Stars (War)
  • Multiple Arrays - Math Expressions, On Level Activity Card, 1-3 (triangle) 
  • Factor Pairs
  • Count and Compare Arrays (Array War)
  • Doubling Pot Problems
  • Which Has More (continued)