Illustrative Mathematics
“One More” Concentration
Help your primary learners develop an understanding of the concept of one more and one less using two sets of number cards. The first set of cards, all in one color, is the "one less" deck. The second set, again all in one specific...
Math Solutions
Race to 20
And they're off! Working in pairs, young mathematicians roll dice to see who can fill in their double ten-frames first. When students finally fill in their arrays, they create addition number sentences that represent their rolls, helping...
Curated OER
Real-Life Problems
There's a party going on! Learners examine an image of a birthday party and answer 10 analysis questions. They employ a variety of math skills including telling time, days of the week, division, subtraction, multiplication, addition,...
Curated OER
Measure the Gardens
Understanding arrays is very similar to understanding the relationship between multiplication and area. Give your third graders an opportunity to practice identifying area models that relate repeated addition and multiplication. They...
Curated OER
Matrices
Students explore matrices. Given a particular situation, they discover the make-up and design of a matrix. Students identify examples of rectangular arrays used in real world situations. They solve oral problems in class.
Curated OER
Lengths, Areas and Shapes - Week 9
In this lengths, areas and shapes worksheet, learners explore overlapping and non-overlapping patterns. They identify the number of objects in a pattern, determine how the pattern may be folded to create additional patterns, and...
Curated OER
Timed Multiplication Fact Practice- 10x10 Array
For this timed multiplication practice worksheet, 3rd graders fill in a 10x10 array. They fill in the array with the math facts that they know as they are timed. They record the facts that they know in a table at the bottom of the page.
Curated OER
Counting Objects Up to 120
If you stare at these too long, you might get dizzy! There are 10 arrays of objects for counting on these two worksheets. Learners are instructed to count, and presumably, write each total. None of these go over 120. If learners aren't...
Curated OER
Arrays
In this arrays activity, students analyze 10 arrays. There are no directions on the page, but it is assumed that students would write the multiplication fact that matches each array.
Math Worksheets Land
Multiplication of Whole Numbers - Step-by-Step Lesson
Use this array of cars to give mathematicians practice writing multiplication sentences. They examine the set and represent it as the sentence 3 x 6 = 18. Because there is a detailed explanation below this one problem, this works best as...
Curated OER
Prime and Composite Numbers
Fifth graders use prime factorization to identify prime and composite numbers. They use cubes to find factors. In groups, 5th graders draw rectangular arrays to discover prime numbers under 100.
Curated OER
Add Groups of Ten
In this addition worksheet, students add groups of tens and their remainders to determine the missing addends in the pairs of 2-digit problems and then find the sums. Students solve nine problems.
West Contra Costa Unified School District
Adding by finding 10's
Count with ten frames in a first grade addition lesson plan. Kids determine how to identify numbers on a number line, as well as with ten frames, and complete ten frames to show their answers in several addition problems.
Curated OER
Square Numbers
Fourth graders demonstrate multiple ways to represent whole numbers, decimals, and fractions. Through demonstration and hands-on activities they model square numbers using arrays. Students visually determine that the array makes a square.
Curated OER
Mathematics Within: Algebraic Processes and Its Connections to Geometry
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....
Curated OER
Fair and Square
In this multiplication arrays instructional activity, students solve 5 problems. Students arrange the tiles into arrays that will match the multiplication fact. Students solve the multiplication problems.
Curated OER
Multiplying by Two-Digit Numbers
In this mathematics worksheet, 6th graders find the product of a given equation. Then they use an array and find the sum of the partial products. Students also use zeros as place holders when necessary.
Curated OER
Matrix Addition
For this matrix worksheet, students add matrices containing four to nine numbers. Explanations and examples are provided. This two-page worksheet contains ten problems.
Curated OER
The Squares of Numbers in Multiplication
Students make multiplication squares. In this math lesson, students review their multiplication facts and multiplication strategies. Students are introduced to multiplication squares when multiplying a number by itself.
Virginia Department of Education
Arithmetic and Geometric Sequences and Series
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...
Curated OER
Multiplication PowerPoint
Providing a step-by-step explanation of two-digit multiplication, a list of vocabulary words associated with this concept, and great examples, this resource would be a terrific classroom addition. Besides the set of of simple...
Mr. Waynes clas
Kinematics Objectives
Accelerate young physicists' learning with this collection of problem-solving worksheets. Starting off by teaching students to identify the given information and variables in physics problems, this resource goes on to challenge them with...
Curated OER
students rotate through four workstations that reinforce the concept of symmetry
Second graders, in pairs, use arrays to explore the relationship between multiplication and division.
Curated OER
Hooked On Problem Solving
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...