Fractions Flashcards
What are the models used to teach fractions?
- area model
- length model
- set model
When are fractions first introduced in the FP?
Grade 2
(term 2 and 3 gets introduced typically)
Fractions
Parts of a whole
Concepts related to fractions learners must understand by the end of primary school
- Equal parts and fair sharing
- Numbers of parts have special names (e.g. quarters, halves)
- If the number of fractional parts increases, the size of each part becomes smaller
- Denominator
- Equivalent fractions
Denominator
The number by which the whole was divided to form the fractional parts
Equivalent fractions
Different ways to refer to the same amount
What can be used to teach the length model?
- Fraction wall
- Cuisenaire rods
- Strips of paper
What can be used to teach the area model?
- Folded paper
- Real-life objects such as pizzas, sandwiches, cakes
- clay
Which model is most difficult for learners to use? Why?
Set models
It is more complex to think of collections as part of a whole or a larger collection
What should teachers do when introducing fractions?
- Use fractional language before introducing symbols
- provide learners with many opportunities to practice sharing
- constantly refer back to the whole and number of divisions
- count in fractions
Is it necessary for FP learners to know the terminology “numerator” and “denominator”?
No
How could one explain the numerator and denominator to learners in the FP?
The top number shows how many pieces/parts there are
The bottom number shows the size of the whole/how many pieces make up the whole
What is another name for the area model?
Regional model
Why do learners struggle with fractions?
- Lack sufficient experience in fair sharing
- Lack sufficient concrete experience in handling parts of a whole
- 1st time thinking about values between 0 and 1
- the vocabulary of fractions is not familiar/used often
- fractions are taught too early without opportunities for concrete conceptualization
What is the suggested approach for teaching fractions?
- Practise sharing wholes into equal and non-equal parts
- Introduce fraction names for different parts (names before symbols!)
- Practise finding equivalent fractions