Online Resources

NCTM Illuminations Lessons and Interactives

This website has hundreds of lessons plus interactives. Select the type of lessons that you want as well as the appropriate grade band, and click Search.

http://illuminations.nctm.org/Default.aspx

Lessons

• All About Multiplication
• Multiplication: It's In The Cards

Interactives

• Factorize
• Product Game
• Primary Krypto

NCTM Calculation Nation

• Factor Dazzle Identify the factors of a number and pick numbers for your opponenet to identify factors.

Thinking Blocks: Multiplication and Division

Thinking Blocks are teacher-developed tools that link to the various problem structures. They use two-digit numbers and problems with multiple steps, including "compare," "part-part-whole," and "change" examples. Because the ideas are presented as games, viewing the introduction is a necessary preliminary for playing.

http://www.mathplayground.com/thinkingblocks.html

National Library of Virtual Manipulatives

• Rectangle Division uses an array model to represent any two-digit number as a product of two numbers.