Arrays Teacher Resources

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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.
In this critter count: student exploration worksheet, 5th graders use the online Gizmo to solve multiplication problems, create arrays and use the commutative property.
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.
Third graders investigate the commutative properties of multiplication and focus upon the setting of cubes in the correct patterns to solve problems. They differentiate between numbers that have multiple factors and prime numbers. Students arrange the cubes in arrays.
In this mathematics worksheet, 2nd graders use counters to show an array. Then they write the multiplication fact for that array. Students also identify if the reverse of a multiplication fact is equal and explain why.
Third graders review the commutative and associative property in mathematics. Using a worksheet, they work together to identify the patterns between the 32 triangles. To end the lesson, they create their own array and exchange it with a partner.
Young scholars practice the use of number properties through exploring the difference of two squares, creating an array model for multiplication, and work with decimal numbers. In groups, students explore patterns in an array and determine algebraic reasoning to explain the pattern.
Fourth graders multiply multi-digit numbers using rectangular arrays, and a variety of mental math strategies. They multiply two-digit numbers through building, sketching, and showing the computation with partial products.
Fourth graders practice mastering the ability to multiply multi-digit numbers utilizing rectangular arrays and a variety of mental math strategies. They model and illustrate meanings of multiplication and division of whole numbers and the addition and subtraction of fractions.
Fourth graders participate in a lesson that uses word problems in order to reinforce the skill of division. They use the methods of array, repeated subtraction, and number line in order to solve the word problems.
Physics classes that are studying electricity connect photovoltaic cells into both series and parallel circuits. Inquiry and critical thinking come into play as learners try to determine which circuit is more productive. They associate their findings to the design of PV arrays. A thorough explanation is provided for the teacher, as well as lab sheets for the high schoolers. 
Using the book Amanda Bean's Amazing Dream: A Mathematical Story, 2nd graders discuss how to solve math problems using multiplication. They are encouraged to solve a series of multiplication problems using model building, drawing, arrays, skip counting or repeated addition. After exploring these algorithms they share their thinking and complete a worksheet related to the book. This is a great problem solving lesson that builds a foundational skill set.
Students design and conduct an experiment to test their ideas about how to speed up or slow down the rate of an enzyme-catalyzed reaction. They have access to an array of physical and chemical factors that might influence enzyme activity. Students are expected to predict how one of the factors might affect the reaction rate and test it in a high quality experiment.
Students explore division concepts by sharing materials equally with classmates through center activities. They manipulate objects, compare groups and arrange items in arrays.
Make it rain on your computer screen with this challenging JavaScript programming project. Modify the existing code of one little drop to create a downpour by using arrays and properties of arrays. But why stop there? How about some snow? Perhaps, a blizzard?   
These aliens will be familiar to any mathematicians who have seen Toy Story! Use an array of them to practice addition and writing number sentences. Because this worksheet includes the explanation to its one problem, project it as an all-class warm up. After examining the array, scholars write the corresponding addition sentence with its answer below. Note that the array doesn't necessarily make the intended number sentence clear, which is another reason you should guide learners through this practice.
Students explore arrays. They get into pairs and receive bags of small buttons to each group.
Second graders, in pairs, use arrays to explore the relationship between multiplication and division.
Students determine if the particles are coming from above, below, or from one side or the other by using a circular array of scintillators
Sixth graders explore probability through experiments using lists, arrays, tree diagrams, and station games. In this theoretical probability instructional activity, 6th graders use a tree diagram to find probable outcomes in an experiment. Students then rotate through stations, playing theoretical probability games. Students determine if the games are fair or biased.

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