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 Key Math Ideas Not Taught In School  Invariants
 Notes on Divisibility  Common Divisors
 Notes on Deferred Computation  the Pythagorean Spiral
 Math in the Comics  part 10
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 Math in the Comics  part 5
 Notes on Representation  Tally Marks
 Quantity  Different Kinds of Numbers: Keys
 Quantity  Different Kinds of Numbers: Intervals

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 Mathematical Notation and Schools – 2
 Mathematical Notation and Schools: The Series
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Tag Archives: standing on nothing
Notes on Representation – Coexistence
In my earlier post on tally marks, I look at the way the tally mark representation system coexists with the decimal number system – with the tally marks thriving in a small but stable niche. In some ways, they coexist … Continue reading
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Tagged denominations, models, naming, representations, standing on nothing
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The Wile E Coyote Principle
Among Wile E Coyote’s more famous abilities (shared by various other comic characters as well) is that of walking off the edge of a cliff without noticing it, and not falling. It’s not that Wile E lives in a world … Continue reading