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Sets (Discussion)
Gives an introduction to sets and elements.
Fire Assessment (Activity)
Learn about estimation through modeling of a forest fire. This activity allows the user to burn a virtual forest, then estimate the number, the percent, or the fraction of trees burned. Fire Assessment is one of the Interactivate assessment explorers.
Base Ten (Discussion)
Discusses the base ten system and how it differs from other base number systems.
This worksheet is for use with the Flake Maker activity (http://www.shodor.org/interactivate/activities/FlakeMaker/).
This worksheet is for use with the activity Triple Venn Diagram Shape Sorter (http://shodor.org/interactivate/activities/TripleVennDiagram/).
Introduces students to modular (clock) arithmetic and how modular arithmetic can be used to encode messages using simple shift, multiple and affine ciphers.
Mixtures (Activity)
Mixtures allows exploration of percents through two piles of colored and uncolored chips. The user must decide how many chips to color to create the desired percentage of colored chips compared to the total pile. Mixtures is one of the Interactivate assessment explorers.
Recursion (Discussion)
Discusses the idea of recursion as it pertains to fractals and sequences.
Infinity and Iteration (Discussion)
Discusses infinity, iterations and limits by referencing fractals and sequences.
Discusses the problem of determining the fractal dimension of irregular fractals and how the scale is indeterminite in these fractals.
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