Curated OER
Introduction to Estimation and Making Arrays
Students explore the concept of estimating and organizing a group of objects into an array to count the exact number of items. They create their own arrays and practice elements of estimation.
Curated OER
Using Arrays
In this multiplication worksheet, students analyze a grid array and use the grid to show the multiplication fact and answer 6 questions.
Curated OER
Basic Multiplication Facts - MathKeys Software
Students explore multiplication concepts. In this multiplication lesson, students define "array" and draw several arrays to represent multiplication number sentences. Students construct arrays on the computer using MathKeys software.
Curated OER
Relating Multiplication and Division
Help the class determine missing factors in equations by creating arrays. Through modeling and practice, they come to see the inverse relationship between multiplication and division. As an assessment, individuals build their own array...
Curated OER
The Commutative Cookie
Learners illustrate multiplication problems using Unifix cubes. Some very nice attachments are present in this tasty lesson which uses baked goods to illustrate an array.
Utah Education Network (UEN)
Pattern Search
Pupils identify and define various mathematical properties, such as the commutative properties of addition and multiplication, and the associative property of addition. They also reason and communicate mathematically by making...
Curated OER
Relating Multiplication and Division R12-7
Learners utilize an array to assist them in completing four multiplication and division math problems.
Curated OER
The Squares of Numbers in Multiplication
Review multiplication facts and concepts! This clear, and easy to follow activity will help your class to understand multiplication by using arrays and repeated addition. There are strategies to help with memorization and manipulative...
Curated OER
100 Hungry Ants
After hearing the story, One Hundred Angry Ants, learners apply what they have seen to a math challenge. They choose one of three numbers: 12, 24, or 36. Imagining this were the number of ants going to a picnic, they consider how many...
Alabama Learning Exchange
Finding Prime
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...
Code.org
Processing Arrays
Scholars use a playing card activity to help them develop a program to find the minimum value of a list. They learn to use for loops to write code that will process lists.
Khan Academy
Challenge: Favorite Animals
I'm not scared of lions & tigers & bears; in fact, they are on my favorites list! Have your young coders practice creating arrays and using loops. First they define the array as a list of favorite animals, then print them out...
Khan Academy
Challenge: Constellation Maker
Populate your own universe with constellations and stars. Modify the existing JavaScript code to use the push method of arrays, and mouseX and mouseY to draw a star based on the click and position of the mouse.
Curated OER
Arrays
In this math activity, students examine 12 arrays and write the multiplication problem that corresponds with the picture. There are no examples.
Curated OER
Multiplication of Whole Numbers
Break up multiplication into more easily conceptualized math operations. Scholars first examine an array of apples and write a multiplication sentence to represent it. Then, they determine which of four sets of addends is equivalent to a...
Curated OER
Multiplication Review
Review the various ways we multiply. Multiplication is presented as repeated addition, equal groups, and in an array. This is a quick way to go over what we do when we multiply and may be a good tool for a beginning of the year review.
Curated OER
Unidades y Decenas
Using examples of numbers less than one hundred, this presentation in Spanish provides a visual representation of arrays. It would be a great way to help learners understand the concept of tens and ones.
Curated OER
Chocolate Bar Math
How many ways can you use a chocolate bar to engage mathematical reasoning? This slideshow gives you seven to choose from. Part/whole, fractions, counting, and using chocolate bars as arrays are only a few. Note: This is a presentation...
Curated OER
Count the Objects
Wow, that's a lot of stars! Learners count 101 stars from an array of five rows. This resource would work best projected since the explanation is on it. Also, if you do this as a whole-class problem, you can have pupils share strategies...
Curated OER
Multiplication of Whole Numbers
Rather than simply have your scholars memorize multiplication facts, be sure they understand the process behind each equation. There are four arrays of objects here; mathematicians write a multiplication sentence for each. Next, they...
Curated OER
Division by Fractions (Part Two)
Investigate division through the use of array models. The lesson focuses on using area models to compare division as sharing with division as grouping. Students evaluate the usefulness and limitations of the two array models.
Curated OER
Skipping Into Multiplication
Young mathematicians study the relationship between skip counting and multiplication. They build on skip counting skills and examine arrays while studying multiplication. Resources are provided.
Curated OER
Solar Kit Lesson #13 - Solarize a Toy
Physical science or technology classes will be invigorated by this challenge: to convert a toy, game, or other device to run on solar power. In doing so, they will design the appropriate solar arrays. This is an A+ lesson, complete with...
Curated OER
"Just Cruising"
Practice writing the same number sentence in a variety of ways. Learners will explore math cruise ship problems to write equivalent sentences. Then complete word problems which have been included in multiple languages.
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