Equivalent Fractions

Some of these misconceptions all have a basis in the concept of equivalence, and we should think carefully about two significant fraction properties. Basing the teaching of fractions on two fundamental fraction properties might alleviate some of the above misconceptions. Every fraction is part of two special groups or families

  1. A family of fractions with the same name (denominator) but different numerator values

  2. A family of equivalent fractions with different denominators.

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Errors or Misconception

Before we start thinking about misconceptions* in the teaching and learning of fractions let us think about the difference between an error and a misconception

an error is an inaccuracy, but a misconception is the result of misunderstanding

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Visualisation

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Teaching Fractions

Owens (1980) examined the relationship between a pupil’s concept of area and their ability to learn fraction concepts finding a positive connection and he found a positive relationship between success on area tasks and success in fractions tasks based on geometric regions. The teaching for transfer from area tasks aids a pupil’s ability to learn fraction concepts. In contrast the findings from a study by Novillis-Larson (1980, p. 423) demonstrated that pupils working “with tasks involving the location of fractions on number lines” gained an imprecise and inflexible notion of fraction.

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Learning Fractions

It is well documented in the research literature that fractions are among the most complex mathematical abstract concepts (Gabriel et al., 2013) that children encounter and equally as important it is widely acknowledged that fractions are difficult to teach. It has also been claimed that learning fractions is probably one of the most serious obstacles to the mathematical maturation of children and that many of the ‘trouble spots’ in early school mathematics are related to rational-number ideas.

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Introduction : Setting the Scene

Fractions are one of the most difficult mathematical concepts that a child will meet and common place everyday definitions of a fractions as being ‘a fragment’ or ‘a small bit’ or part of something eg a pizza.

examples

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Fractions

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Fractions
Evidence
Conceptions

References

 

Ainley, J., Bills, L. and Wilson, K., (2004). Constructing Meanings and Utilities within Algebraic Tasks. International Group for the Psychology of Mathematics Education.

Battista, M.T. and Borrow, C.V.A., (1998). Using spreadsheets to promote algebraic thinking. Teaching Children Mathematics4(8), pp.470-478.

Bicer, A., Capraro, R.M. and Capraro, M.M., (2014). Pre-service Teachers' Linear and Quadratic Inequalities Understandings. International Journal for Mathematics Teaching & Learning.

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Further Reading

 

Egodawatte, G., (2011). Secondary school students’ misconceptions in algebra. University of Toronto, Toronto.

https://www.ncetm.org.uk/media/dj5o223w/ncetm_ks3_representations_algebra_tilespdf.pdf

https://www.ncetm.org.uk/podcasts/using-algebra-tiles-at-ks3/

 

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