Numbers
 Units of Measure (binary, decimal)
 Number Systems (binary, decimal, hexadecimal)
 Number Conversions (binary, decimal, hexadecimal)
 Other
 Addition and Multiplication Tables in Various Bases from Interactive Mathematics Miscellany and Puzzles
 What do you need to know for the exam?
 Can you count to 20 (decimal) and give the euquivalents in binary and hexadecimal?
 Who/what uses the binary numbering system?
 What is the hexadecimal (HEX) number for red, for green, for blue, for white, for black?
RGB color model  Wikipedia  "The main purpose of the RGB color model is for the sensing, representation, and display of images in electronic systems, such as televisions and computers, though it has also been used in conventional photography."
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<font color= "#FF0000"> (Note that it is always preferable to use CSS (Cascading Style Sheets))
 Conversion Chart  Decimal / Hexadecimal / Binary / ASCII / EBCDIC
 You Can Count on Pi  WIRED
 Avogadro's number = 10^{23}  October 23 = Mole day
 Euler's number = 2^{7}  February 7 = eDay
 Pi = (circumference of a circle) ÷ (diameter of the circle) ~= 22÷7 ~= 3.14...  March 14 = Pi day
