In this video, Stella and Oliver teach repeated addition using arrays. They explain how arrays can help visualize addition by breaking down the process into rows and columns. The video demonstrates adding by columns and rows, showing that both methods yield the same result. It concludes by hinting at multiplication as an alternative to repeated addition.

Who are the presenters in the video?

• Oliver and John

• Stella and Mike

• Stella and John

• Stella and Oliver

What is the primary concept being taught in the video?

• Subtraction using arrays

• Division using arrays

• Geometry using arrays

• Repeated addition using arrays

How are rows oriented in an array?

• Vertical

• Diagonal

• Circular

• Horizontal

How many columns are there in the example array?

• Three

• Six

• Five

• Four

What is the result of adding by columns in the example?

• 18

• 25

• 15

• 20

How many rows are there in the example array?

• Five

• Four

• Six

• Three

What is the result of adding by rows in the example?

• 15

• 18

• 20

• 25

What is the total number of boxes in the array?

• 25

• 20

• 18

• 15

Does the method of addition affect the total number of boxes?

• Yes, it changes

• No, it remains the same

• It depends on the array

• Only if the array is large

What alternative method is suggested for finding the total number of boxes?

• Geometry

• Multiplication

• Division

• Subtraction