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Clocks and Modular Arithmetic (Discussion)

Shows how modular arithmetic can be thought of as clock arithmetic.

This worksheet is for use with the Caesar Cipher III activity (http://www.shodor.org/interactivate/activities/CaesarCipherThree/).

Fractal Dimensions (Activity)

Determine the fractal dimensions of several line-deformation fractals. Input the scale factor and number of similar copies, and the dimension will be calculated. Fractal Dimensions is one of the Interactivate assessment explorers.

Cryptography and Ciphers (Discussion)

Introduces the notion of using modular arithmetic to encode messages.

Triple Venn Diagram Shape Sorter Exploration Questions (doc)

This worksheet is for use with the activity Triple Venn Diagram Shape Sorter (http://shodor.org/interactivate/activities/TripleVennDiagram/).

Tables and Chairs Exploration Questions

This worksheet is for use with the Tables and Chairs activity (http://www.shodor.org/interactivate/activities/Chairs/).

Dimension for Irregular Fractals (Discussion)

Discusses the problem of determining the fractal dimension of irregular fractals and how the scale is indeterminite in these fractals.

Inverse Properties (Discussion)

Introduces the concepts of the additive inverse and multiplicative inverse and how they are used when solving equations.

Two Variable Functions (Discussion)

Introduces 2 variable functions as ordered pairs and how to operate perform operations on ordered pairs.

Making Estimates (Discussion)

Introduces students to estimation.

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