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Encode and decode messages to determine the form for an affine cipher. Input a message to encode, then input your guesses for the constant and multiplier. Caesar Cipher II is one of the Interactivate assessment explorers.

Base Ten (Discussion)

Discusses the base ten system and how it differs from other base number systems.

Clock Arithmetic Exploration Questions

This worksheet is for use with the Clock Arithmetic activity (http://www.shodor.org/interactivate/activities/ClockArithmetic/).

Fire Assessment Worksheet

This worksheet is for use with the lesson Estimating With Fire (http://www.shodor.org/interactivate/lessons/EstimatingWithFire/).

Recursion (Discussion)

Discusses the idea of recursion as it pertains to fractals and sequences.

More or Less Estimator Exploration Questions (doc)

This worksheet is for use with the More or Less Estimator activity (http://www.shodor.org/interactivate/activities/MoreOrLessEstimator/).

Venn Diagram Algorithm Worksheet

This worksheet is for use with the lesson Algorithm Discovery with Venn Diagrams (http://www.shodor.org/interactivate/lessons/AlgorithmDiscovery/).

Arithmetic Practice Problems

This worksheet is for use with the Practicing Arithmetic lesson plan (http://www.shodor.org/interactivate/lessons/PracticingArithmetic/).

Caesar Cipher Exploration Questions (doc)

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

Inverse Properties (Discussion)

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

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