One Ninth

Starter of The Day Transum Mathematics Topics

Topics: Starter | Fractions | Investigations

Inger Kisby, Herts and Essex High School
The lemon law was wonderful as it catered for all abilities. My year 7 top set also enjoyed the fractions adding up to one ninth
Harrytown Catholic High School, 9A
We found the 1/27 + 1/27 + 1/27 quite easily, we then had a good discussion at the different denominators. We initially thought it was 1/26 + 1/27 + 1/28 but we did manage to prove this did not work. We eventually found the solution 1/18 + 1/27 + 1/54 using some algebra.
Grade 12 Advanced Functions, Port Hope, Ontario, Canada
My class determined that one of the denominators had to be 9 and then the other two could be +2 and -2, or +3 and -3, or + 4 and -4, etc.
Lucius Evans, Mandeville
My year 7 students cracked this up much faster than I anticipated. Thereafter they were led to write up their own following this pattern.Interestingly they increased the number of fractions and went beyond unit fractions.
Transum,
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This starter has scored a mean of 3.2 out of 5 based on 401 votes.

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Answers

See also the Starter called One Fifth and a related GCSE question.

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	Teacher, do your students have access to computers? Do they have iPads or Laptops in Lessons? Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).