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 Interactivate: Search Interactivate

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Tables and Chairs (Activity)
Explore perimeter through rectangular and straight-line arrangements of tables, calculating the number of chairs needed to surround different arrangements. Tables and Chairs is one of the Interactivate assessment explorers.
Flake Maker (Activity)
Create your own fractals by drawing a "line deformation rule" and stepping through the generation of a geometric fractal. Parameters: Grid type, number of bending points on the line.
Place Value (Discussion)
Discusses what individual digits represent in multi-digit integers.
Making Estimates (Discussion)
Introduces students to estimation.
Introduction of elementary set operations through internet searching.
Caesar Cipher II (Activity)
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.
This worksheet is for use with the Koch's Snowflake activity (http://www.shodor.org/interactivate/activities/KochSnowflake/).
Defines the notion of prisoners and escapees as they pertain to iterative functions. A prisoner ultimately changes to a constant while escapees iterate to infinity.
Dimension and Scale (Discussion)
Discusses fractal dimension, how that dimension relates to scale, and the formula needed to calculate the fractal dimension of an object.
This worksheet is for use with the Clock Arithmetic activity (http://www.shodor.org/interactivate/activities/ClockArithmetic/).
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