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 Lesson Plans (2) Learning Activities (2)

## Thinkfinity Lesson Plans

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Subject: Mathematics
Title: Strong Arm Iteration
Description: This reproducible worksheet, from an Illuminations lesson, guides students as they take a three-digit number, cube its digits and add them. They do the same with the sum and continue the process until they notice a pattern.
Thinkfinity Partner: Illuminations

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Subject: Mathematics
Title: Check That Digit
Description: In this Illuminations lesson, students are introduced to a common and practical use of modular arithmetic. First the barcode system is examined, specifically UPC and ISBN bar coding. Then, students discover the applications of modular arithmetic as applied to credit card numbers. There are also links to an online activity sheet and other related resources.
Thinkfinity Partner: Illuminations

## Thinkfinity Learning Activities

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Subject: Mathematics
Title: Nim Games
Description: This student interactive, from an Illuminations lesson, allows players to challenge the computer in the games of Static Nim, Identity Nim, and Doubling and Tripling Nim. Nim is any type of '' take away game'' in which players alternately remove counters, and the player who takes the last counter wins. There are infinitely many versions of Nim.
Thinkfinity Partner: Illuminations