Repeated Addition and Arrays

Mrs. Walker's lesson focuses on using math drawings to create arrays and relate them to repeated addition. The lesson involves drawing arrays on a grid, shading them with different colors, and writing repeated addition equations. Students work through four problems, each with different configurations of rows and columns, to understand the concept of arrays and repeated addition. The lesson concludes with instructions for independent practice.

What is the main focus of today's lesson?

• Understanding geometry

• Learning about fractions

• Exploring algebraic expressions

• Using math drawings to create arrays

What materials are needed for the lesson?

• A protractor and a compass

• A calculator and a ruler

• Graph paper and a pencil

• Crayons or colored pencils and a problem set

In Problem 1, how many rows and columns are in the array?

• Two rows and three columns

• Two rows and four columns

• Three rows and two columns

• Four rows and two columns

What is the repeated addition equation for Problem 1?

• 3 + 3 = 6

• 2 + 2 = 4

• 5 + 5 = 10

• 4 + 4 = 8

In Problem 2, how many rows are there in the array?

• Four rows

• Three rows

• Five rows

• Two rows

What is the repeated addition equation for Problem 2?

• 5 + 5 + 5 = 15

• 4 + 4 + 4 = 12

• 3 + 3 + 3 + 3 = 12

• 2 + 2 + 2 + 2 = 8

In Problem 3, how many columns are shaded?

• Three columns

• Four columns

• Two columns

• Five columns

What is the repeated addition equation for Problem 3?

• 4 + 4 + 4 + 4 + 4 = 20

• 5 + 5 + 5 + 5 = 20

• 3 + 3 + 3 + 3 = 12

• 2 + 2 + 2 + 2 = 8

In Problem 4, how many columns are there after adding one more?

• Five columns

• Six columns

• Four columns

• Three columns

What is the repeated addition equation for Problem 4?

• 5 + 5 = 10

• 2 + 2 + 2 + 2 + 2 = 10

• 3 + 3 + 3 = 9

• 4 + 4 + 4 = 12