This Adding and Arrays Worksheet asks 2nd grade students to write a number sentence for six arrays and two story problems. An answer key is included, so practice with equal rows takes only minutes.
This Using Arrays to Write Addition Equations Worksheet has 2nd grade students count equal rows of apples and write a number sentence for each array. An answer key is included.
This arrays and addition worksheet asks 2nd graders to read four rectangular arrays and write a repeated addition sentence for each one. An answer key is included, so checking equal-group work takes seconds.
Using this Be the Baker Multiplication Activity, students interpret products of whole numbers into equal groups.
In this 2.OA.4 Second Grade Common Core lesson, students use addition to find the total number of objects arranged in arrays with up to 5 rows and columns.
This sweet rectangular arrays addition activity has 2nd-3rd grade students match cupcake arrays to equal-addend equations. Cards, a recording sheet and practice page, with an answer key included.
Using this Sharing Chocolate Rows and Columns Activity, students partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
In this 2.G.2 Second Grade Common Core Lesson, students will partition a rectangle into rows and columns and count to find the total number of them.
Rows, columns, and neat little groups
An array is a set of objects arranged in equal rows and columns, like eggs in a carton. Second graders build arrays up to 5 rows and 5 columns and write an addition equation to find the total: 3 rows of 4 = 4 + 4 + 4 = 12. They learn that rows go across and columns go up and down, and they split rectangles into equal squares. The click moment comes when kids see that they can count by rows or by columns and get the same total. That's the start of multiplication!
Arrays are everywhere once you start looking. These moves connect the pictures to the numbers.
Hand out small counters or cereal pieces and say "Build 3 rows of 5." Kids line them up, then count by rows and by columns. A pretend chocolate bar is a perfect example of rows and columns in real life.
Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.
Try it withSharing Chocolate Rows and Columns ActivityActivitiesOpen it →Model one array on the board and circle each row, then each column, writing both equations: 5 + 5 + 5 and 3 + 3 + 3 + 3 + 3. Ask kids why the answer is the same. That talk is where the real learning happens.
Why it works: handing over the work step by step, from teacher to student, is one of the most widely used teaching frameworks (Pearson and Gallagher, 1983).
Try it with2.OA.4 Second Grade Common Core LessonCommon Core LessonsOpen it →Kids draw dots in rows and columns on grid paper, then write the matching addition equation underneath. Drawing makes them slow down and check that every row is equal.
Why it works: children learn more from words and pictures together than from words alone (Mayer, 2009).
Try it withUsing Arrays to Write Addition Equations WorksheetWorksheetsOpen it →Sweet treats and baking trays keep second graders counting rows with big smiles.
ActivitiesArrange candy pictures into rectangles and write the addition sentence for each one.
Open Sweet Rectangular Arrays Addition Activity →
ActivitiesKids fill trays with equal rows of cookies, then count how many they baked.
Open Be the Baker Multiplication Activity →
WorksheetsLook at each array, count the rows and add them up to find the total.
Open Adding and Arrays Worksheet →Teacher favorites right now: Adding and Arrays Worksheet, Using Arrays to Write Addition Equations Worksheet and Arrays and Addition Worksheet.
An array is a group of objects arranged in equal rows and columns. Second graders use arrays up to 5 by 5 and write addition equations to find the total.
Rows go across from left to right, and columns go up and down. A quick trick: rows are like the rows of seats in a theater.
Arrays show equal groups, which is exactly what multiplication is. When kids add 4 + 4 + 4 in an array, they are getting ready for 3 × 4 = 12.
Look for arrays together: egg cartons, muffin pans, windows and ice cube trays. Ask "How many rows? How many in each row? How many altogether?"
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