## Video Links 5-5

**Video:**

Rational and Irrational (time: 7:23)

… See the whole entry

**Video:**

Rational and Irrational (time: 7:23)

… See the whole entry

**Videos:**

Rational Numbers (time: 2:55)

Rational numbers (time: 5:26)

… See the whole entry

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

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

- Introduction
- definition of a rational number
- numerator
- denominator
- classification
- proper fraction
- improper fraction
- whole number

- Fundamental property
- Operations with rationals
- addition
- subtraction
- multiplication
- division

This section, which may be review, is concerned with the rational … See the whole entry