Grade 3 Math TEKS 3.4D:Arrays up to 10 by 10

Learning Target: I can use arrays to help multiply.

Focuses On:

• Understanding how columns and rows relate to form an array
• Finding the total number of objects in an array by multiplying the number of columns by the number of rows
• Extending the concept of using repeated addition to solve multiplication problems to finding the total number in a repeated array problem

Builds On:

2.6A:

Model, create, and describe contextual multiplication situations in which equivalent sets of concrete objects are joined.

2.9F:

Use concrete models of square units to find the area of a rectangle by tiling it with no gaps or overlaps, counting to find the total number of square units, and describing the measurement using a number and the unit.

Next Level:

3.4K:

Solve one-step and two-step problems involving multiplication and division within 100 using strategies based on objects; pictorial models, including arrays, area models, and equal groups

4.4C:

Represent the product of 2 two-digit numbers using arrays, area models, or equations, including perfect squares through 15 by 15

Read More:

This lesson is designed to support student understanding of arrays, solidifying the vocabulary: columns, rows, and arrays. Students have many array models to explore with inquisitive learning prompts to guide their thinking in how an array translates to multiplication.

The two instructional blocks in this lesson focus on arrays and repeated arrays.

In the first instructional block, students explore the different components of an array as they practice identifying the rows, columns and total objects in each array.

The second instructional block focuses on repeated arrays. Using their knowledge of repeated addition as a strategy to solve multiplication problems, students find the total number of objects in repeated arrays.

Scaffolds and supports such as models and pictorial representations are intentionally built throughout the lesson to support conceptual learning.