Writing Repeated Addition Sentences Using Arrays

The video tutorial explains how to write repeated addition sentences using arrays. It begins by defining arrays as arrangements of objects in rows and columns, clarifying the difference between the two. The lesson demonstrates how to write addition sentences using both rows and columns, showing that both methods yield the same total. It emphasizes understanding the structure of arrays and the flexibility of using different perspectives to achieve the same result. The tutorial concludes by reinforcing the concept that the total number of objects remains constant, regardless of the orientation of the array.

What is an array?

• An arrangement of objects into rows and columns

• A single line of objects

• A circular arrangement of objects

• A random collection of objects

In which direction do rows go?

• Diagonally

• Up and down

• Across

• In a circle

How many circles are in each row of the given array?

• Three

• Four

• Five

• Six

What is the repeated addition sentence for the columns in the array?

• 5 + 5 + 5

• 3 + 3 + 3 + 3 + 3

• 4 + 4 + 4

• 2 + 2 + 2 + 2

Does rotating the array change the total number of objects?

• It depends on the rotation angle

• No, the total remains the same

• Yes, it decreases the number

• Yes, it increases the number