## Description

# What our Addition with Arrays lesson plan includes

Lesson Objectives and Overview: Addition with Arrays uses the concept of arrays to show repeated addition. The lesson defines arrays, including horizontal and vertical. It also presents illustrations, which show both how a correct array appears and groups that are not arrays. At the end of the lesson, students will be able to find the total number of objects in an array using repeated addition. This lesson is for students in 1st grade and 2nd grade.

### Classroom Procedure

Every lesson plan provides you with a classroom procedure page that outlines a step-by-step guide to follow. You do not have to follow the guide exactly. The guide helps you organize the lesson and details when to hand out worksheets. It also lists information in the blue box that you might find useful. You will find the lesson objectives, state standards, and number of class sessions the lesson should take to complete in this area. In addition, it describes the supplies you will need as well as what and how you need to prepare beforehand. For this lesson, the only supplies you will need are stickers, small cards of half sheets of paper, and the handouts. To prepare for this lesson ahead of time, you can gather the supplies and copy the handouts.

#### Options for Lesson

Included with this lesson is an “Options for Lesson” section that lists a number of suggestions for activities to add to the lesson or substitutions for the ones already in the lesson. One optional addition to this lesson is to create another activity where students match cards with arrays on them to cards with repeated addition statements. If your students grasp the concepts in this lesson early, you could also have students write the repeated addition equations as multiplication facts.

### Teacher Notes

The teacher notes page includes lines that you can use to add your own notes as you’re preparing for this lesson.

## ADDITION WITH ARRAYS LESSON PLAN CONTENT PAGES

### Addition with Arrays

The Addition with Arrays lesson plan includes two pages of content. The lesson begins by explaining that an array is an arrangement of objects, pictures, or numbers in rows and columns. Rows are horizontal and columns are vertical. For example, seats in a theater are in rows, while we see columns in front of a house.

We can use arrays to organize objects into rows and columns. The rows and columns in an array have to have equal numbers. The lesson shows a few correct examples of arrays and a few incorrect examples of arrays.

We can use arrays to show repeated addition. For example, if someone is making dog treats, they might arrange them as an array on their cookie sheet. In this example, they have three rows and seven columns of treats. The repeated addition sentence for this array is 7 + 7 + 7. It uses the number of columns (7) and repeats it by the number of rows (3).

The lesson then includes two more examples. One of these example shows an array with five rows and six columns. The repeated addition sentence for this array would be 6 + 6 + 6 + 6 + 6. The other example has three rows and four columns. That repeated addition sentence would be 4 + 4 + 4.

## ADDITION WITH ARRAYS LESSON PLAN WORKSHEETS

The Addition with Arrays lesson plan includes four worksheets: an activity worksheet, a practice worksheet, a homework assignment, and a quiz. You can refer to the guide on the classroom procedure page to determine when to hand out each worksheet.

### STICKER ARRAYS ACTIVITY WORKSHEET

For the activity worksheet, students use small sheets of stickers to create arrays on paper using the stickers with different numbers of rows and columns. The students then hold up their arrays for the teacher to check. The teacher will determine which arrays the students will create. Students can also write repeated addition sentences next to the arrays.

### ADDITION SENTENCES PRACTICE WORKSHEET

For the practice worksheet, students will write addition sentences for different arrays.

### ADDITION WITH ARRAYS HOMEWORK ASSIGNMENT

The homework assignment asks students to look at arrays and answer questions about them. For each array, they will determine how many rows and columns are shown. They will also write a repeated addition sentence for each array.

### QUIZ

This lesson includes a quiz that you can use to test your students’ knowledge and understanding of the lesson material. For the quiz, students will draw arrays for two repeated addition equations.

### Worksheet Answer Keys

This lesson plan includes answer keys for the practice worksheet, the homework assignment, and the quiz. If you choose to administer the lesson pages to your students via PDF, you will need to save a new file that omits these pages. Otherwise, you can simply print out the applicable pages and keep these as reference for yourself when grading assignments.