Video Links 5-3
Videos:
Adding Integers (time: 1:51)
Subtracting Integers (time: 2:08)
Multiplying Integers (time: 1:15)
Dividing Integers (time: 1:18)
… See the whole entry
Chapter 05
Video Links 5-2
Videos:
Sieve of Eratosthenes (time: 2:55)
Prime Numbers (time: 1:42)
Largest Prime (time: 1:14)
… See the whole entry
Reference Topics 5-3
Download integer worksheets from this site:
http://worksheetplace.com/index.php?function=DisplayCategory&showCategory=Y&links=3&id=25&link1=40&link2=46&link3=25
Mrs. Glosser’s Math Goodies,TM
This site gives worksheets, exposition, and other practice, but would like to sell you a CD.
http://www.mathgoodies.com/lessons… See the whole entry
Reference Topics 5-4
Rational Numbers
http://mathworld.wolfram.com/RationalNumber.html
Teaching module on rational numbers for prospective teachers.
http://jwilson.coe.uga.edu/Texts.Folder/Tirosh/Module.html
Reference Topics 5-5
A variety of proofs of the Pythagorean theorem are found at this site. There are also some interesting remarks concerning this theorem:
http://www.cut-the-knot.org/pythagoras/index.shtml
For those of you who think that irrational numbers can be written in some (yet unknown) … See the whole entry
Reference Topics 5-6
The most famous real numbers that are not rational are the numbers pi and e. However there are many interesting constants in mathematics, as described at the following site:
http://sprott.physics.wisc.edu/pickover/trans.html
The number 0, the additive identity, is the subject … See the whole entry
Reference Topics 5-7
Clock arithmetic and modular arithmetic
http://www.shodor.org/interactivate/discussions/morerem.html
This site gives a nice introduction to modular arithmetic.
http://betterexplained.com/articles/fun-with-modular-arithmetic/
Is there really such a thing as “infinity”?
http://www.math.toronto.edu/mathnet/plain/answers/infinity.html… See the whole entry
Reference Topics 5-8
This site makes a transition from the modular arithmetic (of the last section) to writing secret codes (of this section). A Caesar cipher is a secret code in which each letter in the plain text is replaced by a letter … See the whole entry
Reference Topics 5-1
This site (courtesy of Rita B. Sowell) provides practice with the basic properties. It is a bit elementary, but if you have having trouble remembering which property is which, this site might help.
http://www.math.com/school/subject2/lessons/S2U2L1GL.html
Vanishing Leprechaun (along with a solution).… See the whole entry
History 5-8
This is one of the best all around sites that I have found. It is titled “The MacTutor History of Mathematics Archive.”
http://www-history.mcs.st-and.ac.uk/~history
This is an award-winning site that links to all sorts of mathematics information.
https://mathshistory.st-andrews.ac.uk/HistTopics/History_overview… See the whole entry