I unschool my 7, 10 and 12 y/o and we recently had to do some testing to prove to the gov't here that that the kids are doing OK. It turns out that they are ok but 'behind' in math. (this is not surprising to me since we don't 'do' math). It is upsetting to my 12 y/o who wasn't exactly told the results of the tests but he gets that he's not up to par with his schooled friends in math.
We live in a country where the books sold are not in the language I speak although I can decipher the math books. I have just a day or two to order something on e-bay or amazon for the 12/yo because a friend can deliver it- but also for the 10 and 7 y/o. My 12/yo is currently working out of a math book for 10y/o's and almost has it complete. He says it's about the level kids in school are at anyway around here (we're in the Caribbean and school tends to be delayed). He is the only one of the three that wants to do math. We are using Khan Academy videos to get some of the info - today he did reducing fractions to the lowest common denominator - and he gets it pretty easily. My 10y/o and 7 y/o do not want to do math problems. The issue is that the gov't here is going to make me get tests each year so it may be that I need to introduce some sort of formal study.
Anyway - that was the long way of asking if any of you have book recommendations for Math.
thanks in advance!!