TAG | math language
13
Nimble with Numbers: The Importance of Skip-Counting
No comments · Posted by Sara (readers1) in Math
By Sara Finegan
An inordinate number of kids are growing up without learning their multiplication facts. Some of this is due to the prevalent use of calculators. Some is due to the fact that there’s been an overall rejection of rote learning – throwing the baby out with the bathwater, in this case, I think. Some of it is due to low numeracy as a result of math disabilities.
Many kids with learning disabilities really struggle with numbers and their values. And, I think, it also has to do with processing memory and retention of information that isn’t used on a regular basis.
I think there’s a place for rote learning of math facts in a demanding classroom. The only way to learn multiplication facts and what happens when you add ten to a number is to recite them over and over in some way or another.
The way I use is skip-counting. Skip-counting can be done starting at any age, and should continue to be done if not daily, then at least several times a week once the kids know the routine.
I cannot stress enough the importance of visual cuing when it comes to math. In this case, a giant number line, or individual number lines to 100 for each student are in order. You can also use individual multiplication charts or a giant one; the point is that the kids have to have the numbers 1-100 in front of them when they are skip-counting, at least during the first few months.
A lot of teachers practice skip-counting with their students through 3, 4, and 5 multiplication facts, and then stop. As a result, many kids know their multiplication facts through five, and can’t go higher. Don’t let this happen.
It can be a part of your daily routine to start with 3, and have the kids skip-count to 60. Move to 4, then 5, and 6. Once they know those, move to 7 and 8. Practice them religiously. I like to point at the numbers on a chart or number line with a pointer or a yardstick at first, but later it becomes a favorite reward for a student to be allowed to stand at the front of the class and cue the numbers.
It doesn’t take long for kids to internalize the facts as they continue to skip-count regularly. But here’s the deal: You can’t stop here.
One mistake I’ve seen over and over again is special educators working on skip-counting with their students and then never extending the skill into actual math problems. And when I say “actual math problems,” I don’t mean a standard multiplication worksheet. I mean math problems that require critical thinking.
There’s no point in rote learning unless the information learned by rote is applied in complex situations. Skip-counting alone, in a vacuum, has little meaning. We need our students to be able to use the math facts to solve word problems, to reason through division problems, to figure out the value of x, and to calculate prices and amounts.
So teach the multiplication facts by rote, but then require your students to use them, and use them in a variety of ways. Only in this way will they truly be learning.
In a demanding classroom, rote memorization has a place in supporting mastery of facts to be used in deeper-level situations.![]()
critical thinking · demanding classroom · high expectations · learning disabilities · learning disabled · low numeracy · mastery · math fluency · math language · multiplication · Nimble with Numbers · processing · rigor · rigorous instruction · rote learning · skip counting · special education · standards · visual cuing
17
Math Fluency: Becoming “Nimble with Numbers”
No comments · Posted by Sara (readers1) in Math
By Sara Finegan
Last year I started a program I called “Nimble with Numbers.” Before each math lesson, and sometimes before we started reading and writing instruction, we’d do math problems. But we never used paper. We used language and our heads, and worked through them out loud.
It became one of my students’ favorite activities, and we continue it to this day.
Nimble with Numbers involves what I think of as math fluency – the ability to work with numbers in creative ways to get to an answer. Here’s an example of what we do:.
Using the document camera, I will write a couple of numbers – with no operation expressions. And I will ask out loud for an answer. This is what it looks like:
Me: (writing the numbers 36 and 72). What’s the difference between 36 and 72?
Students: Oh! Oh! Let me!
Me: Ok……..Brandon. Give it a whack.
Brandon: Well, 36 to 46 is ten. And 46 to 56 is another ten. 56 to 66 is ten.
Me: Ok, so how many do we have so far.
Brandon: Thirty. Ten and ten and ten.
Me: Ok.
Brandon: And 66 to 70 is …67, 68. 69….four.
Me: Four. Ok. So what do we have now?
Brandon: Thirty-four.
Me: Ok.
Brandon: And 70 to 72 is two more. So thirty six.
Me: So what is the answer?
Brandon: The difference between 36 and 72 is thirty six.
We do this with multiplication, addition, and subtraction, always using the proper vocabulary (difference, sum, product).
What I have discovered is that TALKING our way through math problems embeds the skills and opens up the synapses for math reasoning in a way that nothing else has in my classroom. The ability to explain our reasoning is an added benefit: the real gift for my kids has been the development of fluency in their approach to math problem-solving by moving to friendly numbers and taking things step by step.
Another example:
Me: Ok. How many legs do 456 elephants have? (Writing 456.)
Kids: Me! Oh me! Me! Me! Me!
Me: Hmmm. Mariana.
Mariana: Well, 456 is really four hundred plus fifty plus six.
Me: Uhuh.
Mariana: And an elephant has four legs.
Me: Yep.
Mariana: Four legs times 400 elephants is……….four times four is 16. So since it’s four times 400, we’re going to add two zeros to that number in the ones and tens places. So that’s 1600.
Me: Uhuh.
Mariana: Then, four times 50 is……well, four times five is 20. But 50 is five tens, not five ones. So it’s 200.
Me: Uhuh. What do we have so far?
Mariana: Sixteen hundred and two hundred is eighteen hundred.
Me: Ok.
Mariana: So four times six elephants is 24 elephants. So four hundred and twenty six elephants have eighteen hundred and twenty-four legs.
Me: Applause.
In a demanding classroom, the kids do the work. The teacher calls on people and facilitates.
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demanding classroom · high expectations · learning disabled · math fluency · math language · Nimble with Numbers · rigor · rigorous instruction · special education · standards
By Sara Finegan
If we knew as much about math disabilities as we do about reading disabilities, we’d be in far better shape in this country. Great Britain, Australia, and New Zealand educators and researchers have been exploring all aspects of difficulty with numbers for a long time. I don’t notice a whole lot of interest among American researchers, and as a result, we are unfocused and less-than experts when it comes to math instruction in the special ed classroom.
I’m the first to admit that I don’t know a lot, and that I am slow to educate myself. This is probably because I wasn’t much good with math myself as a student, and I still have the residue of my frustration and insecurity flowing through my veins.
Still, I’ve come to actually like teaching math, and have lately been having more success than failure in developing strategies that work in my classroom. In my school district, kids take benchmark assessments every 6-8 weeks in math to ascertain their progress and status with regard to the standards.
For the first time last year, most of my students scored at Basic level or above after the first math benchmark exam. We also made our way all the way through the fourth and fifth grade math standards – in our own time, and in our own way. This year, 12 of 14 of my students are in general education math at their own grade level. I’m not sure yet how well it’s working, but at least we’re giving it a try.
My two mentors.
I owe pretty much everything about my approach to math to two skilled colleagues.
Greg Roy, the sixth grade teacher at the elementary school that has been my home away from home for the last five years, introduced me to “friendly numbers” and “decomposing big numbers” and base tens. Leading our staff development in math, he taught me how to think about numbers and operations in a new way.
He continues to give me simple explanations for concepts that seem too complicated for me to teach. And he trusts me enough now to have handed over half of the sixth grade general education class to me for math this year.
Leatrice Roberts was for many years a District Math Resource Teacher in San Diego Unified School District until budget cuts eliminated her position. She’s now in her own classroom and doesn’t have as much time to help guide my thinking about math, but I can always reach her by email. And before the financial meltdown forced our district to wipe out the entire math department, she spent hours in my classroom learning about learning disabilities and brainstorming with me about ways to teach new concepts and skills.
If not for Leatrice, I would not have overcome my fear of teaching kids about decimals: she walked in and did a one-hour lesson that opened up all of the doors for us and jump-started a comprehensive unit in which the kids became inspired by math.
Just another brick in the wall.
I envision (and I’m sure this is not an original train of thought here) math as a long brick wall. (when I was in school, I think I bruised my head on it more times than not). Each brick is an important skill. The more loose or missing bricks we have, the more unsteady the wall. Most students in Special Day Classes are missing a lot of bricks, and the ones that are in place are precarious, at best.
So what are these bricks?
The bottom row is all about math facts.
- Knowing what makes ten and what ten minus any number is.
- Knowing what makes twenty and what twenty minus any number is.
- Knowing what makes one hundred.
- Multiplication facts.
Math facts fit into an area of math reasoning called numeracy, which has to do with understanding the value , use, and place of numbers.
Low numeracy is a highly-prevalent math disability that is pretty much unspoken in the U.S. In England, they know all about it and are developing ways to help kids and adults with coping strategies.
We don’t really know why so many people don’t grasp the basic math facts. And it really doesn’t matter why, now, does it? What’s important is how we teach those facts or, if a student cannot internalize them, what strategies we can teach him or her to use to move on: what mortar, so to speak can we use to strengthen this level of the math wall?
Another row of the brick wall has to be the language of math. There’s a whole vocabulary of math that one must know in order to be able to do things like set up a numerical equation from a word problem, or just figure out what a word problem is asking.
This vocabulary is part of math reasoning, and you can bet that math reasoning is yet another skill set that is tenuous, at best, in kids with learning disabilities. I’m just starting to explore the language of math. Well, not the language itself, but how to blend it into my instruction and get my students to embed it in their skill sets.
Part of the reason that understanding the language of math is important is that it helps us to visualize what’s going on in a problem and grasp what the question is all about. Consider this word problem:
Ms. Finegan bought 92 Halloween pencils – the kind with sparkly purple and orange ghosts on them, and erasers in the shape of skulls. She wants to share them equally with her 18 students. How many will each student receive?
If you don’t know that the words “share equally” mean that each student is going to get the same number of pencils, you aren’t going to be able to draw a picture or diagram of the problem, which I think is really important, though not crucial, to developing math reasoning.
And if you don’t know that “share equally” implies division, you, like most of my students last year, you aren’t going to have the foggiest idea how to proceed with this problem whether you can draw or not.![]()
So many of our students not only don’t know the basic math vocabulary but have receptive and/or expressive language disorders that sometimes math instruction seems incredibly daunting. It’s much easier to throw a worksheet in front of students and teach them the rote solving strategies we learned growing up than it is to force the language through the lesson, to talk and talk, and model, model, model. But it’s that talking and talking that is going to develop math students.
For my next few posts about math instruction, I’m going to focus on these basic numeracy skills. We’ll move on to higher-level reasoning later in the year.
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demanding classroom · high expectations · learning disabled · low numeracy · math disabilities · math language · number sense · rigor · rigorous instruction · special education · standards
