Exploring Model Multiplication with Arrays

The video tutorial covers modeling multiplication using arrays. It begins with an introduction and preparation, followed by an explanation of key vocabulary such as rows, columns, and arrays. The tutorial then demonstrates how to write multiplication sentences using arrays and provides practice in drawing arrays. Finally, it applies these concepts to solve word problems, emphasizing the use of arrays to find products.

What should you do if you don't understand something during the lesson?

• Skip it and move on

• Write a question mark next to it in your notes

• Ignore it

• Ask a friend

Tags

CCSS.RI. 9-10.10

CCSS.RI.8.10

CCSS.RL.7.10

CCSS.RL.8.10

CCSS.RL.9-10.10

What is a row in the context of arrays?

• A single object

• A group of random objects

• Objects arranged from left to right

• Objects arranged from top to bottom

Tags

CCSS.3.OA.A.1

How do you define a column in an array?

• A group of random objects

• A single object

• Objects arranged from top to bottom

• Objects arranged from left to right

Tags

CCSS.3.OA.A.1

What is an array?

• A single row of objects

• A single column of objects

• A random arrangement of objects

• A model that uses equal rows and columns to represent a multiplication problem

Tags

CCSS.3.OA.A.1

When writing a multiplication sentence for an array, what should the first factor represent?

• The number of objects in each row

• The number of rows

• The number of columns

• The total number of objects

Tags

CCSS.3.OA.A.1

If you have 3 rows with 8 objects in each row, what is the multiplication sentence?

• 3 x 8 = 24

• 8 x 3 = 24

• 3 + 8 = 11

• 8 + 3 = 11

Tags

CCSS.3.OA.A.1

How many objects are there in an array with 5 rows and 6 objects in each row?

• 30

• 25

• 35

• 11

Tags

CCSS.2.OA.C.4

What is the multiplication sentence for an array with 5 rows and 6 objects in each row?

• 6 x 5 = 30

• 5 x 6 = 30

• 6 x 6 = 36

• 5 x 5 = 25

Tags

CCSS.3.OA.A.1

In the word problem, how many carrot plants does Mr. Bloom have if he has 4 rows with 3 plants in each row?

• 15

• 12

• 10

• 7

Tags

CCSS.2.OA.C.4

What is the multiplication sentence for Mr. Bloom's carrot plants?

• 4 + 3 = 7

• 3 x 4 = 12

• 3 + 4 = 7

• 4 x 3 = 12

Tags

CCSS.3.OA.A.3