4th year of secondary education - Section B




Representing whole numbers.

Representing rational numbers.

Representing irrational numbers.

Representing numbers graphically.

This unit explains the steps we can take in order represent whole, rational and irrational numbers on a straight line.

The first part of the unit is similar to one we saw previously, which explains how whole numbers are represented on a straight line. The second part shows the geometric process we need to follow in order to represent rational numbers graphically. Finally, the third part illustrates a method which can be used to represent some irrational numbers.

  • To represent whole numbers graphically.
  • To represent rational numbers graphically.
  • To represent some algebraic irrational numbers graphically.

  Fernando Arias Fernández-Pérez
Spanish Ministry of Education. Year 2001

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