Fractions are a difficult concept for many students to grasp. Students
often see fractions as an abstract concept that is nonsensical if the students
do not receive proper instruction on understanding the meaning of fractions.
Partitioning and
iteration fractions are tools to aid understanding of the meaning of fractions
and aids operating on fractions.
Partitioning according to the article “consists of creating smaller,
equal-sized amounts from a larger amount” (Siebert, Gaskin). This means one takes a whole or larger amount
and cuts/partitions that amount into equal sized pieces from that one amount.
Iterating consists of “making copies of a smaller amount and combine them to
create a larger amount” (Siebert, Gaskin). This means that one takes a smaller amount and
makes exacts copies of that amount to create a larger amount. For example, one
makes four copies of ¼ to make a whole. Partitioning and iterating can be used
with any fraction even if the numerator of the fraction is more than one. Both
partitioning and iterating is needed when working with fractions since “without
partitioning, the creation of smaller, equal-sized larger pieces is difficult;
without iteration, the creation of larger pieces from smaller ones is
difficult” (Siebert, Gaskin).
Partitioning and
iterating can be a useful tool for understanding operations with fractions,
such as multiplication. When one multiplies fractions he or she needs to be
aware that “multiplication requires finding the total amount of ones that are
in a certain number of groups of a certain size” (Siebert, Gaskin). Partitioning
is needed to split the fraction into equal pieces of the group that is being
multiplied by and then finding the ones. Iterating can be used to justify the
answer.
For students to
be able to understand fractions they need to see that the numerator and the
denominator are not whole numbers. A
commonly used term when teaching fractions is “out of”. This term is confusing and creates an image
where the numerator and the denominator are just whole numbers. Also the term
“out of” does not indicate the relationship of the parts to the whole, this is
why educators should not use the “out of” term when teaching fractions. Terms
like “cut evenly”, “separate into equal parts”, and “making copies” should be
used instead to indicate partitioning and iterating.
Fractions can be
a confusing concept for many students, but with the appropriate language use
and the proper images of fractions students will be able to have a greater
understanding of fractions. The use of partitioning and iterating can give
students the proper image of fractions and help students to multiply, add,
subtract, and divide fractions since it is giving students an image that does
not depend on whole numbers.
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