Lesson Plan
Curated OER

Square Numbers

For Teachers 4th
Fourth graders use square tiles to help them explain the concept of square numbers.
Lesson Plan
Alabama Learning Exchange

Finding Prime

For Teachers 5th - 7th Standards
Fifth and sixth graders explore prime numbers. They work with a partner to build rectangular arrays using twelve tiles. Factor pairs are noted and recorded on graph paper. Pupils construct rectangular arrays with a prime number and...
Lesson Plan
Curated OER

Array Bingo

For Teachers 2nd - 3rd
Learners recognize patterns in arrays and repeat these patterns back to the teacher. They determine and tell the teacher the total number of squares in the array based on the pattern they recognize.
Lesson Plan
Curated OER

Arranging Chairs (Arrays)

For Teachers 3rd
The creation of arrays is the focus of this mathematics lesson. Pupils consider a situation for a theater stage performance: different amounts of people are coming to the show, and they must arrange the seats in rows of equal numbers. A...
Lesson Plan
Pennsylvania Department of Education

Multiplication Using Arrays

For Teachers 2nd - 4th
Explore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...
Lesson Plan
Curated OER

The Squares of Numbers in Multiplication

For Teachers 2nd - 3rd
Review multiplication facts and concepts! This clear, and easy to follow instructional activity will help your class to understand multiplication by using arrays and repeated addition. There are strategies to help with memorization and...
Lesson Plan
Curated OER

Prime Numbers and Factors

For Teachers 4th - 6th
Students determine factors of numbers to 100 and identify prime factors; students differentiate prime and composite numbers by the factors of the numbers.
Lesson Plan
Virginia Department of Education

Arithmetic and Geometric Sequences and Series

For Students 9th - 12th Standards
Examine the importance of sequence and series through contextual situations. Here, learners partake in a five-day unit that begins with the basics of arithmetic and geometric sequences and series. As it progresses, pupils apply the...
Lesson Plan
Curated OER

Picture Board

For Teachers 2nd - 4th Standards
Learners divide a poster board so everyone gets the same amount of area to decorate. Youngsters talk about the different ways to divide a rectangle. They measure their lines to make sure that each piece is equal and then decorate their...
Lesson Plan
Curated OER

Using Arrays to Show Multiplication Concepts

For Teachers 3rd - 5th
Students draw arrays. In this multiplication lesson, students draw arrays, write multiplication sentences for arrays and discuss how changing the order of the factors affects the product.
Lesson Plan
Curated OER

Mathematics Within: Algebraic Processes and Its Connections to Geometry

For Teachers 5th
Fifth graders discover the connections between algebra and geometry. With a focus on arrays and factors, they are introduced to multiplication. They develop an array for multiples of 2 through 10 and identify the factors of each row....
Lesson Plan
Curated OER

The Squares of Numbers in Multiplication

For Teachers 2nd - 3rd
Learners make multiplication squares. In this math lesson, students review their multiplication facts and multiplication strategies. Learners are introduced to multiplication squares when multiplying a number by itself.
Lesson Plan
Curated OER

Hurray for Arrays and Multiplication

For Teachers 3rd
Third graders begin learning about multiplication using arrays. In this multiplication with arrays lesson plan, 3rd graders interact with tiles on the overhead as they follow the teacher in making arrays. They write multiplication...
Lesson Plan
Curated OER

Complexity Madness

For Teachers 5th
Discuss different techniques for finding the area of a geometric shape, with a great visual guide. Using a real life example, learners calculate the area of a rectangle and a square. 
Lesson Plan
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Illustrative Mathematics

Shape Sequence Search

For Teachers Pre-K - 1st Standards
Learning that size and orientation don't affect the classification of shapes is a big step for young mathematicians. Support children with developing this key understanding by looking at the array of shapes included in this resource. For...
Lesson Plan
Curated OER

Little Magic Squares

For Teachers 2nd - 4th
Learners and teacher talk about arrays of numbers like the ones in A Square of Circles. They check to see that the rows all have the same sum; that the columns all have the same sum; and that the diagonals have the same sum.
Lesson Plan
Curated OER

Geometry and Geoboard

For Teachers 6th
Sixth graders use geoboards and dot paper to experiment with geometric concepts. In this geometry lesson, 6th graders complete four activities using geoboards or dot paper including naming points on a coordinate plan and finding the area...
Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
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...
Lesson Plan
Curated OER

How using number patterns help us add or subtract

For Teachers 2nd
Second graders use a number line to understand multiples.  In this number line lesson, 2nd graders use a floor size number line and calculate problems with multiples. Students complete a worksheet with multiples.
Lesson Plan
Curated OER

Hooked On Problem Solving

For Teachers 4th
Fourth graders use properties of operations and problem-solving strategies to do mental calculations, and look for patterns in the solutions. They create an array, using each of the digits 1-9 exactly once to form addition problems...
Lesson Plan
Curated OER

the Squares of Numbers in Multiplication

For Teachers 2nd - 3rd
Students memorize the multiplication math facts and learn many different ways of visualizing and practicing the multiplication concepts. They begin practicing with arrays, skip counting, and moving manipulatives for the 0, 1, 2, 3, and 4.