happycc Posted November 16, 2011 Share Posted November 16, 2011 What year do they teach multiplying and dividing fractions? I want to teach my kids the whys of multiplying and dividing fractions.....not just the how... I have Key To Fractions but again it teaches the HOW not the why.... ie why do we multiply the reciprocal when dividing with fractions... what does the product of a fraction represents pictorially? I cannot buy anything more right now...so need something now to teach..website...video....anything... Quote Link to comment Share on other sites More sharing options...
Amy Jo Posted November 16, 2011 Share Posted November 16, 2011 I finally figured this out with Liping Ma's book. I highly recommend it. The best 'story problem' for me was about workers building a 1 3/4 mile road, and they can complete 1/2 mile a day. There are many more details, but I'm not yet competent to explain them. As to MEP, it looks like year 4 includes multiplying fractions (no idea how complex, however). Week 16 has some multiplication in the lesson plans - a picture with 1/4 + 1/4 + 1/4 + 1/4 = __; it also includes 1/4 x 4 = in that same group. I don't have the second half of the TM handy though to check further. The scope & sequences (~week 19) lists practice in determining area and includes factions as a possibility - I can't check that though ATM. Perhaps someone else can verify. (I assume you mean fractions X fractions?) Quote Link to comment Share on other sites More sharing options...
Sherry in OH Posted November 16, 2011 Share Posted November 16, 2011 Going solely by the scheme of work http://www.cimt.plymouth.ac.uk/projects/mepres/primary/y126sw.pdf it appears that multiplication and division of fractions are introduced in year 5 (weeks 20 and 23). Fractions are covered extensively in year 6. Quote Link to comment Share on other sites More sharing options...
letsplaymath Posted November 17, 2011 Share Posted November 17, 2011 Free resources: Guide to everything about fractions Understanding division of fractions Analyzing a story problem about fraction division Quote Link to comment Share on other sites More sharing options...
LittleIzumi Posted November 17, 2011 Share Posted November 17, 2011 http://www.khanacademy.org/video/multiplying-fractions?playlist=Developmental+Math Quote Link to comment Share on other sites More sharing options...
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