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It is possible to trace the origin of the word "ratio" to the Ancient Greek λόγος (logos). Early translators rendered this into Latin as ratio ("reason"; as in the word "rational"). The Pythagoreans developed a theory of ratio and proportion as applied to numbers.

RATIO

Can a rectangle be attractive?

Key questions

  1. What is ratio?

  2. How are fractions and ratios related?

  3. Can we simplify a ratio?

  4. What is proportion?

  5. How do we share an amount in a ratio?

6 lessons

Specification detail

binomial expansion.png

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

The Man Who Counted by Malba Tahan

Introduce...

Title - Key questions

finding ratios - 1

bracelets - 1, 3

write ratio in form n to 1 - 3

ratio sharing colouring - 1

recipes - 4

ratio matching - 1,3

ratio and rods - 1,3

ratio bar model card sort (with errors to identify) - 5

4 in a line - 1,2

cuisenaire ratio - 1,3

Develop...

Title - Key questions

yoghurts - 2,4,5

two numbers ratio - 5

superhero ratios - 3,4

unitary method - 4

ratio makes sense - 1,2,3,4,5

ratio given one side - 5

ratio fill in the gaps - 5

ratio don - 1,4

ratio and shape - 5

progression ratio - 1,2,3,4

pocket money - 3,5

orangier - 1,2,3,4

angles and ratio - 5

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