Project Math Access DVD 02 - Intermediate Grade Levels- Part 02
Transcript Start
Audio Description: Part two; place value.
TEACHER: Okay, when you add, you get the same number or a what?
ALI: bigger number
TEACHER: Okay, and when you subtract, you get the same number or a...?
ALI: smaller number
TEACHER: What's the add sign in Nemeth, the addition sign?
ALI: 3-4-6
TEACHER: And the subtraction sign?
ALI: 3-6
TEACHER: Okay, good.
What I want you to do right now is I‘m going to have..., oh you already did this. Your name and date is on the paper. We're going to talk about the order in which we're going to do things, okay? What we're going to do is we're going to practice setting numbers on your tray. Do you need to scoot your chair over a little bit?
ALI: yeah
Audio Description: The tray has four vertical sections.
TEACHER: Okay, the Unifix cubes are in the box behind the tray, okay?
Audio Description: Ali locates the box with her hand.
TEACHER: So what we're going to do is we're going to set the number; we're going to say it in money; we're going to estimate, then we're going to figure out the change that we're going to get back. And we're going to use many tools to help us. We're going to use our place value board, okay? We're going to use our abacus. We're going to use the braillewriter, and we're going to use the calculator. Okay, but before we get going on all that, I have to ask you a couple questions. And we've talked about this a little bit before. What do we use that abacus for, why do we use it?
ALI: To do math, it's an easier way to do math.
TEACHER: It's an easier way to do math.
ALI: ...than doing that carrying thing on the brailler.
TEACHER: Okay, now chatty Barbie, nice and loud, okay?
ALI: yep
TEACHER: Okay, alright, we're going to start out, I'm going to give you some cubes and what I would like you to do is, I'm going to have you set a number, okay? Before we do that though, you have a tray in front of you that has different slots, okay? We have 4 different slots. Can you tell me the names of the different slots?
ALI: ones, tens, hundreds, thousands
Audio Description: She started with the slot on the right.
TEACHER: Okay, I'm going to give you-- we're only going to use up to the hundreds today, okay? But what goes between the hundreds and the thousands?
ALI: a comma
TEACHER: A comma, and what is the math comma?
ALI: dot 6
TEACHER: Dot 6, okay.
I'm going to give you several cubes and what I would like you to do is set a number for me, okay? is set a number for me, okay? The first number that we're going to set is 161, 161.
Audio Description: Ali moves several of the cubes to a slot on her left.
ALI: 161
TEACHER: 161 is what we're looking for.
Audio Description: She continues to move cubes.
ALI: 1 hundred is right here.
Audio Description: She indicates the second slot from the left.
TEACHER: If you have extra cubes you can put them in the bin behind it.
Audio Description: Ali places extra cubes in the bin.
ALI: That'll be much easier.
TEACHER: That'll be much easier, yes.
ALI: 1 hundred, then 6 cubes for 60.
TEACHER: umhum
Audio Description: Ali takes three cubes from the hundreds slot, leaving one.
ALI: 3,4, 5, so
Audio Description: There are already two cubes in the tens slot. Ali counts six more cubes into the tens slot.
TEACHER: Okay, you've got some extra ones hanging out up here. Let's get those in the bin.
ALI: There's 1?
TEACHER: There's 2.
ALI: No, you said 161?
TEACHER: 161, umhum, okay, extra cubes in here.
ALI: Now 1 cube in the ones column.
Audio Description: Ali places one of the extra cubes in the ones slot, and places the other extra cube in the bin.
TEACHER: Alright, okay, we've got the number 161. If this were, let's say dollars and cents, how would you say this number?
ALI: 1 dollar and 61 cents.
TEACHER: Okay, where would the decimal point go?
ALI: after the 1
TEACHER: Okay, and what's the decimal point in braille?
ALI: 4-6
TEACHER: Okay, I would like you to write this down in money, 1 dollar and 61 cents.
ALI: What's the dollar sign?
TEACHER: Did you forget the dollar sign?
ALI: dot 4, s?
TEACHER: Well, you're thinking Nemeth. There are two dollar signs. Your choice, which one do you want to use today? Do you want to use the one you know, you're more familiar with?
ALI: yeah
TEACHER: Go ahead and use that one.
Audio Description: Ali turns to the braillewriter.
ALI: Dot 4, s, number sign
TEACHER: We're in Nemeth, remember you drop your numbers.
ALI: 1 point 6, 1
TEACHER: okay