We spent a LOT of time on fractions in about 7th grade. I think it was really time well spent. My son is a rising 11th grader and he knows his fractions. A few of the things we did back then:jabec wrote:My 11yo DS is not catching on to fractions. I don't know how to teach them. Anyone know of some good printable manuplitives?
Or any other ideas?
1. I had an ancient game with plastic circles - with the roll of the fraction die, he had to try to put together complete plastic circles. I credit this game with really showing him that fractions which seem "close" are really not going to work. So if he rolled a 1/3, he could put two 1/6 pieces in, but he could not put 1/6 and 1/5, it just didn't fit. Things like that. I think it helped him realize that converting fractions has to be exact when doing conversions on paper, as well. I think you could do the same thing with a paper or plastic set you have on hand, and you can always use tape to put what you want on a regular die. I do think the physical "fitting together" does help convince some kids that fraction conversions must be exact.
2. I worked at Kumon at the time, and he did their fractions level that year. It involved spending about 20 minutes per day, every day, on drill pages. I think this helped him know automatically which fractions match, what fractions reduce or convert to, and what decimals are equivalent. It was painful at the time, but this has made advanced math much easier, I think. I think you could find these types of printable pages online or even do an online game for this. As I recall, our Quarter Mile Math has a fractions section, but I don't think we needed to use it so I can't be sure. (Note that he did Singapore 6 in 7th grade, so he wasn't doing as much regular math as the typical 7th grader doing Saxon. I'm not sure if this much drill would fit in or even be needed for the Saxon student.)
3. We had a fractions dominoes game, where you could match the "picture" of the fraction shape with the symbols and I think maybe the decimals. I'm sure you can find printable fraction dominoes online at places like Enchanted Learning. It wasn't something we played a ton, but I felt it was just a reminder/reinforcement that the symbolic fraction really did represent something physical.