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internet page
1Definitions and Practice Problems
http://www.mathsisfun.com/irrational-numbers.html
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internet page
2fact monster
http://www.factmonster.com/ipka/A0876704.html
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internet page
3imaginary numbers
http://www.mathsisfun.com/numbers/imaginary-numbers.html
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internet page
4Classifying Numbers
http://mathforum.org/library/drmath/view/55736.html
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internet page
5Quia Games
If you finish early, practice your skills by playing rational number games.
http://www.quia.com/pop/37541.html