Башкы мазмун

## 2-класс

### Course: 2-класс > Unit 1

Lesson 1: Жүздүктөр# Бирдик жана ондуктарга киришүү

Таңсулуу абакус аркылуу разряддарды түшүндүрөт. Салман Хан тарабынан түзүлдү.

## Сүйлошүүгө кошулгуңуз келеби?

Азырынча посттор жок.

## Видео ачыктамасы

Voiceover:Hey Sal. Voiceover:Hello Brit. Voiceover:I picked this up at a garage sale and I know you like colors. Voiceover:I love colors. Voiceover:You wear colorful shirts everyday and I thought you might like this. Voiceover:I do, this is very kind, I like it. So what are you hoping
to do with this thing? Voiceover:Well, at minimum just
maybe represent numbers. Voiceover:To count, keep track of numbers? Voiceover:Counting the number of days or... Voiceover:One, two, three, yeah
I can imagine doing that. Voiceover:Okay, so moving the
beads down is a number, right? Voiceover:Yeah. Voiceover:There's 10. Voiceover:10 there, so maybe that would be 20, 30, 40, 50, 60, 70, 80, 90,100. Yeah, you could count 100
beads to keep track of things. Voiceover:What if I need to count 105 or 106? Do I need to buy another one? I don't even know where I
would get more of these. Voiceover:That would be an
option, maybe not an option if you don't know where to get it. Let's see, well the different
colors, just like we have different forms of
currency, maybe we can have each of these
colors, maybe the columns, they represent a different amount. So this is 10 right over
here, what if we had one of these red beads
represent 10 of these blue beads in the first column. So then, you could go, this would be 10 or you could say that is 10. Voiceover:So there's two
representations of 10 here? Voiceover:Yeah, they way we just
worked it out here, yeah. And then 11 would be that. Voiceover:And this is 21.
Voiceover: 21. Voiceover:Yep, you have two 10s and a one, 21. Voiceover:The wooden colored is going to represent all of the red beads. Voiceover:Yeah, that's a good system. If each column represents 10 of the beads to the column to it's right,
that could be interesting. Because if this represents 10 red beads, that's 10 10s, this is
equivalent to 100 blue beads. And so this would be equivalent to 10 of the brown beads, which would be 100 of the red beads, which would be 1000 of the blue beads, and this would be 10,000 of the blue beads and this would be 100,000 of the other
blue beads, this would be 1,000,000 of the blue beads. Voiceover:So we're going to
be able tor represent all the numbers in between
one and say 1,000,000. Voiceover:I think we can. Voiceover:Let me just give you a number. What about 15,003? Voiceover:So let's think a
little bit about this. So let's try with the big numbers first. So each of these is one,
each of these is 10, each of these is 100,
each of these is 1000. I don't have 15 of these,
but these are 10,000. Each of these are 10,000. So this is one 10,000,
then I could do five 1000s. One, two, three, four,
five, so this is 15,000. So one 10,000, five 1000s, and zero 100s, zero 10s, and then throw a three there. So 15,003.