Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7. (Standard #: MAFS.3.OA.1.1)

9 Other Resources

### Other Resources

Students can practice answering mathematics questions on a variety of topics. With an account, students can save their work and send it to their teacher when complete.

Subject Area(s): Mathematics

Primary Resource Type: Student Center Activity

Using arrays to multiply

In this Khan Academy video tutorial, learn to use arrays and repeated addition to multiply. This is not an introductory video to either concept, to either concept. An array of 8 items is used to show how one array can be represented in multiple ways, using different factors of the whole.

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Subject Area(s): Mathematics

Primary Resource Type: Tutorial

Multiplication as groups of objects

In this Khan Acadmey tutorial video, learn to use arrays to show different groups of objects while relating this to multiplication.

Subject Area(s): Mathematics

Primary Resource Type: Tutorial

Intro to multiplication

In this Khan Academy tutorial vidoe, learn to use arrays and repeated addition to visualize multiplication.

Subject Area(s): Mathematics

Primary Resource Type: Tutorial

Number Line Arithmetic (Add, Subtract, Multiply, Divide)

This virtual manipulative can be used to picture whole number operations, addition, subtraction, multiplication and division, carried out on a number line.

Subject Area(s): Mathematics

Primary Resource Type: Educational Software / Tool

Number Line Bars

A versatile tool that can be used to illustrate the operations of addition, subtraction, multiplication, and division.

Subject Area(s): Mathematics

Grade Level(s): 1, 2, 3, 6

Primary Resource Type: Virtual Manipulative

Pan Balance - Numbers

This tool helps students better understand that equality is a relationship and not an operational command to "find the answer." The applet features a pan balance that allows the student to input each half of an equation in the pans, which responds to the numerical expression's value by raising, lowering or balancing.

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Subject Area(s): Mathematics

Primary Resource Type: Virtual Manipulative

Animal Legs (multiply using repeated addition)

Students use repeated addition as a strategy to solve multiplication story problems.

Subject Area(s): Mathematics