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Lesson Plan
Better Lesson

Better Lesson: Skittle Arrays

For Teachers 2nd Standards
Skittles - yum!! You will instantly have your student's attention when you teach about arrays using Skittles. This detailed lesson walks you through the steps, provides worksheets for varying math levels, and includes a video of the...
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Activity
Shodor Education Foundation

Shodor Interactivate: Factorize 2

For Students Pre-K - 1st Standards
The resource consists of student notes, instructor notes, and an interactive activity. The activity allows learners to find the factors of a given number and then draw the product as the area of a rectangle on a grid.
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Activity
Beacon Learning Center

Beacon Learning Center: Groups of Dogs

For Students K - 1st Standards
Students solve multiplication problems using arrays in this interactive web lesson.
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Interactive
Math Is Fun

Math Is Fun: Divide Blocks

For Students 2nd - 4th
An array of chocolate squares is pictured and students must click on the answer to a corresponding division question.
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Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: One Hundred Hungry Ants [Pdf]

For Students 2nd - 3rd
This is an activity for exploring arrays after reading the story One Hundred Hungry Ants by Elinor J.Pincze.
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Interactive
ICT Games

Ict Games: Array Display

For Students 2nd - 3rd
Create arrays by adding and subtracting rows and columns. The related multiplication facts are displayed in two formats: rows x columns and columns x rows.
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Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Number Story Arrays [Pdf]

For Students 2nd - 3rd Standards
A number story activity for students to practice addition of equal groups and multiplication.
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Activity
Math Cats

Math Cats: Explore the Multiplication Table

For Students Pre-K - 1st Standards
Create multiplication fact arrays using this tool. Click a number on the side and then the times symbol. Now click a number along the top and the equals symbol. The array appears in yellow. The answer in digits is shown at the bottom of...
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Interactive
Math Is Fun

Math Is Fun: Multiply Blocks

For Students 2nd - 4th
An array of chocolate squares is pictured and students must multiply the number of rows by the number of columns and click on the product in the table shown.
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Lesson Plan
Better Lesson

Better Lesson: Writing Equations for Arrays

For Teachers 2nd Standards
Second graders will learn how to make number sentences for an array by walking around the classroom and writing number sentences for the different arrays the teacher hangs around the room. A video is included, along with examples of...
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Lesson Plan
Better Lesson

Better Lesson: What Is an Array?

For Teachers 2nd Standards
Teach a lesson about repeated addition and arrays by using this very detailed lesson plan. The author walks you through the lesson step-by-step and even includes a video of her teaching about arrays for reference. Word problem worksheets...
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Activity
Illustrative Mathematics

Illustrative Mathematics: Counting Dots in Arrays

For Teachers 2nd Standards
This activity addresses CCSS 2.OA.C.4 where students count dots in an array using repeated addition. This skill lays the foundation for an understanding of multiplication.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Factorize

For Students Pre-K - 1st Standards
This resource investigates the concept of factors by creating rectangular arrays. The interactive tool allows learners to relate area to multiplication.
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Handout
Cool Math

Coolmath: Coolmath4kids: Division: An Introduction

For Students 2nd - 3rd
Uses visual models to explain what division is and includes sample problems to try. It also offers links to division games.
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Handout
Cool Math

Coolmath: Coolmath4kids: Multiplication: Equal Groups

For Students 2nd - 3rd Standards
Uses visual models to explain what multiplication is and includes sample problems to try.
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Unknown Type
Khan Academy

Khan Academy: Meaning of Multiplication

For Students 2nd - 4th Standards
Practice representing multiplication as equal groups, repeated addition, or arrays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. Video content is available for...
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Unit Plan
Khan Academy

Khan Academy: Multiply With Arrays

For Students 2nd - 4th
Practice multiplying 1-digit numbers using arrays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Counting Dots in Arrays

For Teachers 2nd - 3rd Standards
This task aims to show learners that there is often more than one way to represent a quantity. This lesson also lays a foundation for students to understand the commutative property of multiplication.
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Interactive
Khan Academy

Khan Academy: Intro to Multiplication

For Students 3rd Standards
Explains what multiplication is and how to represent it using equal groups and arrays. Also looks at the strategies of repeated addition and skip counting and how they can be used to solve multiplication problems. Includes practice...
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Unit Plan
Khan Academy

Khan Academy: Intro to Division

For Students 3rd Standards
Discusses what division, equal groups, arrays, and equal shares are, and the connection between division and multiplication. Includes examples as well as practice questions with explanations.
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Handout
Khan Academy

Khan Academy: Intro to Commutative Property of Multiplication

For Students 3rd Standards
Explains what the commutative property of multiplication is and how to use it. Includes examples and practice problems throughout, along with explanations of solutions.
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Unit Plan
Khan Academy

Khan Academy: Intro to Associative Property of Multiplication

For Students 4th
An introduction to the associative property of multiplication. Includes examples and practice problems throughout, along with explanations of solutions.
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Lesson Plan
Alabama Learning Exchange

Alex: Peep Peep

For Teachers Pre-K - 1st
Students will take a virtual tour of a Peep Candy factory. Students will observe the way Peeps are packed in rectangle shaped arrays, 2 rows of 5.
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Article
Other

Learn to Code With Me: The 4 Data Structures Every New Developer Should Know

For Students 9th - 10th
Learn about the four data structures evident inbn computer programming.