WendyW
12-05-2016, 03:04 PM
You wouldn't think a language-based LD would affect a math curriculum, but my ds has hit a wall with percentage word problems. He cannot grasp how to pull the required equation out of the narrative, and says he is unable to visualize what they are asking. We are using Saxon Alg. 1, which uses little ovals to draw a rudimentary diagram of the problem and ds says they make NO sense whatsoever and refuses to use that intended clue. I've written him out a basic generic equation to use as a help, %/100 of WN is WN
He has no trouble with basic word problems where the part after the "=" is the unknown. Those are the 6th grade version of percentages. It's when the other numbers are unknown, or an increase/decrease is involved that he's stuck. Here are today's problems as an example.
1. The troll became incensed when he saw the billy goats prancing across the bridge. Finally he tore down the bridge- but not before 18% of the goats had crossed. If 45 goats had crossed, how many goats were there? (equation would be 18/100 x What Number = 45)
2. A 130% increase in the doll population resulted in a total of 1610 dolls. How many dolls were present before the increase? 230/100 x WN = 1610 or (130/100 x WN) + WN = 1610
He had me check out how he set them up before doing the math, and both were wrong. Once properly set up, he solves them easily. There is no pattern to his mistakes in his set-ups. I think he might be just throwing the numbers in there and rolling the dice that maybe they land in the right places.
I need helps for teaching him to visualize these problems. He can't untangle the math from the verbage.
I've searched for websites and practice pages, and everything I found is the basic ones that he can already do, and ONE worksheet of advanced problems that we've already used. I can't find anything that addresses his problem.
He has no trouble with basic word problems where the part after the "=" is the unknown. Those are the 6th grade version of percentages. It's when the other numbers are unknown, or an increase/decrease is involved that he's stuck. Here are today's problems as an example.
1. The troll became incensed when he saw the billy goats prancing across the bridge. Finally he tore down the bridge- but not before 18% of the goats had crossed. If 45 goats had crossed, how many goats were there? (equation would be 18/100 x What Number = 45)
2. A 130% increase in the doll population resulted in a total of 1610 dolls. How many dolls were present before the increase? 230/100 x WN = 1610 or (130/100 x WN) + WN = 1610
He had me check out how he set them up before doing the math, and both were wrong. Once properly set up, he solves them easily. There is no pattern to his mistakes in his set-ups. I think he might be just throwing the numbers in there and rolling the dice that maybe they land in the right places.
I need helps for teaching him to visualize these problems. He can't untangle the math from the verbage.
I've searched for websites and practice pages, and everything I found is the basic ones that he can already do, and ONE worksheet of advanced problems that we've already used. I can't find anything that addresses his problem.