My daughter is struggling with adding fractions so thought I would help. Big mistake. She is fine adding things like 3/4 and 3/4, geting 6/4 then simplifying to 1 and 1/2. Issue is when adding, for example, 1/4 and 5/6.
I was taught that you look at the denominator and find the lowest commmon denominator betwen 4 and 6 which would be 12, change 1/4 to 3/12 and 5/6 to 10/12, add them to get 13/12 then simplify to 1 and 1/12.
Daughter is being taught that you multiply the denominators together, so 4 x 6 = 24, then change 1/4 to 6/24, change 5/6 to 20/24, add to get 26/24 then simplify it at the end.
I totally appreciate that the two methods give the same end result. Is this a conscious shift though in the way of teaching, am I misremembering my own days at school, or something else? By trying to help her I actually made things worse as she glazed over totally at the mention of "lowest common denominator".
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how is your child being taught to add fractions?
21 replies
PoppyPopcorn · 10/11/2017 13:04
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