Better Lesson
Better Lesson: Skittle Arrays
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...
Better Lesson
Better Lesson: What Is an Array?
Teach a lesson plan about repeated addition and arrays by using this very detailed lesson plan. The author walks you through the lesson plan step-by-step and even includes a video of her teaching about arrays for reference. Word problem...
Better Lesson
Better Lesson: Writing Equations for Arrays
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...
Khan Academy
Khan Academy: Multiply With Arrays
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.
Better Lesson
Better Lesson: Naming Arrays
After partners have worked with each other and have some practice creating arrays, it is time to challenge them to define the concept demonstrated by an array and how it can be used to solve problems.
Khan Academy
Khan Academy: Math: 3rd Grade: Multiply With Arrays (Practice)
Math practice exercise on using arrays to multiply.
Khan Academy
Khan Academy: Math: 3rd Grade: Understand Multiplication With Arrays (Practice)
Math practice exercise on using arrays to multiply.
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
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.
ICT Games
Ict Games: Array Display
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.
National Institute of Standards and Technology (NIST)
Dictionary of Algorithms and Data Structures: Array
The definition of an array data structure with links to array subtopics.
Better Lesson
Better Lesson: Finding Arrays in an Irregular Polygon
Third graders decompose an irregular polygon into arrays to find the area.
Better Lesson
Better Lesson: Arrays Focusing on Rows and Columns
Third graders develop a meaning of multiplication through the use of arrays.
Khan Academy
Khan Academy: Teaching Guide: Intro to Js Arrays
A teaching guide for the Intro to JS lesson plan on Arrays.
Cold Spring Harbor Laboratory
Dolan Dna Learning Center: Dna Arrays
Animation showing the mechanics of a DNA array, a recently discovered method to analyze patterns of gene expression at different timepoints in a living cell.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Number Story Arrays [Pdf]
A number story activity for students to practice addition of equal groups and multiplication.
PBS
Pbs: Modeling Fraction Multiplication Using Arrays
This video illustrates a word problem involving the multiplication of fractions using an array to model the solution visually. The problem involves puffins, arctic birds that live in colonies and fish to feed their young.
PBS
Pbs: Modeling Fraction and Mixed Number Division Using Arrays
This video illustrates how to use an array as a visual model for solving a word problem involving the division of fractions and mixed numbers. The problem asks students to determine the width of a rectangular fennec fox den based on its...
PBS
Pbs: Modeling Fraction Division Using Arrays
This video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to determine the width of a rectangular platypus burrow based on its length and area. In the accompanying...
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
This task aims to show students 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.
OnlineMathLearning.com
Online Math Learning: Addition and Arrays (Grade 2)
A list of suggested activities for addressing CCSS 2.OA.C.4 where students work with arrays and repeated addition. Includes a problem for a 3X5 array and its solution in a video. [8:23]
CPALMS
Cpalms: Using Arrays to Model the Distributive Property
[Free Registration/Login Required] Students are presented with a rectangular area model and asked to write an equation that represents the distributive property. Detailed lesson plan provided, along with assessment methods,...
US Geological Survey
Usgs: Monterey Submarine Canyon, California Moored Array Data Report [Pdf]
This advanced site discusses some of the research done and research techniques used in studies of the Monterey Canyon. Great graphics showing the position of the canyon relative to other features of the continental margin. Also...
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