Helping with Math
Division: Four Digit by One Digit
Lengthen learners' long division skills with this single-page handout. They must use problem solving skills to find the quotient when a four-digit number is divided by one digit. This is a nice assignment for early in the process of...
Curated OER
Halloween Count
In this Halloween worksheet, students count the Halloween pictures in each problem. Students count Halloween pictures in 3 problems.
Curated OER
Prime and Composite Numbers
Sixth graders inspect prime and composite numbers. Using graph paper, they draw as many different shaped rectangles as possible. They use the dimensions of the rectangles to discuss prime and composite numbers. Students create a chart...
Curated OER
Long Division in Two Digits
In this math worksheet, learners find the solutions to the problems for long division. The answers can be shown in the printable version.
Curated OER
Division with Dividends to 99
In this math worksheet, learners find the answers to the following long division problems. The problems can have remainders.
Helping with Math
Multiplication: 3-digit x 1-digit
When youngsters are just beginning to multiply multi-digit numbers, here is a nice second step. After they master multiplying two-digits by one-digit without regrouping, they can move on to three- by one-digit problems. Here are 30 of...
Curated OER
What Goes Around
Fourth graders investigate the relationships between the area and perimeters of squares and rectangles. They calculate the perimeter of rectangles and squares using a formula. Students investigate the relationship between the perimeter...
Curated OER
Find Factors of a Number
In this finding factors practice worksheet, students sharpen their problem solving skills as they solve 6 story problems.
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...
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.
National Council of Teachers of Mathematics
Nctm: Illuminations: Factorize
This resource investigates the concept of factors by creating rectangular arrays. The interactive tool allows learners to relate area to multiplication.
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,...
Alabama Learning Exchange
Alex: Area Model of Multiplication Base 10 Manipulatives
Students will use base 10 manipulatives to build a rectangular array to represent double digit multiplication. Students will make the connection between the standard algorithm and the rectangular array.This lesson plan was created as a...
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]
Alabama Learning Exchange
Alex: Peep Peep
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.
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...
Shodor Education Foundation
Shodor Interactivate: Factorize 2
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.
National Council of Teachers of Mathematics
Nctm: Illuminations: Factorize
With this activity, you can visually explore the concept of factors by creating rectangular arrays. The length and width of the array are factors of your number.
Khan Academy
Khan Academy: Repeated Addition
In this exercise, students practice repeated addition. Students receive immediate feedback and have the opportunity to get hints, watch a tutorial video, and try questions repeatedly.
Amby Duncan-Carr
Amby's Math Resources: Finding the Area of a Rectangle
The tutorial investigates area and how it is the total number of square tiles covered. Examples and practice problems are included.
Alabama Learning Exchange
Alex: What's Your Question? Multiplication Word Problems
Learners will explore multiplication and word problems. They will work cooperatively to examine a story scenario, list possible questions to develop a completed word problem and solve it using a variety of strategies. The students will...