Abu'l Hasan Ahmad ibn Ibrahim Al-Uqlidisi was a Muslim Arab mathematician. He wrote the earliest surviving book on the positional use of the Arabic numerals around 952. It is especially notable for its treatment of decimal fractions.
EXACT REPRESENTATIONS
What makes a number rational or irrational?
Key questions
Can we relate fractions to their decimal equivalents?
Can we work with square roots?
What are surds?
How can we simplify a surd?
4 lessons
Specification detail
Literacy
stories that set a frame or background
stories that accompany or intertwine
stories that introduce
stories that explain
stories that ask a question
stories that entertain
The Number Devil by Hans Magnus Enzensburger
Al-Uqlidisi
Introduce...
is it rational - 2, 3
surd or not a surd - 2,3
squaring the square - 2,3
Develop..
surds pyramid - 3,4
surds spiders - 4
simplifying - 4
manipulating surds - 3,4
multiplication madness - 3,4
mulitplication squares - 3,4
irrationals A - 3
irrationals B - 3
irrationals C - 3
irrationals D - 3