Winwheel.js is a feature packed JavaScript library that allows you to easily create HTML5 canvas Winning / Prize Wheels, Pie graphs and other things using a highly configurable JavaScript class.

NOTE: can "only" represent numbers with a maximum of 2^31 digits after the decimal point. big.Rat is fine for representing rational numbers, but Decimal is better for representing money. Why? Here's a ...

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Abstract: The IEEE 754 standard does not distinguish between exact and inexact floating-point numbers. There is no bit or field in the binary encoding that indicates whether a floating-point number is ...

A lesson plan focusing on decimals on a number line and adding and subtracting rational numbers. Two designed worksheets to go along with answer keys attached!