교실 번호 이야기: 49의 표현 살펴보기

### 매력적인 숫자 이야기: 숫자 49 살펴보기
* 📝 학생들은 다양한 수학적 전략을 사용하여 **숫자 49의 다양한 표현**을 공유하며 숫자 토크에 적극적으로 참여하고 있습니다.
* 🙋 학생들은 손을 들어 **확장된 형태와 아이덴티티 속성을 포함한 자신의 방법**을 시연하여 이러한 개념을 이해했음을 보여 주도록 권장합니다.
* 🔢 한 학생은 **49를 40 더하기 9**로 확장하고, 다른 학생은 **수직 표현**을 사용하여 숫자를 세분화하여 다양한 문제 해결 방식을 보여줍니다.
* 💬 교사는 학생들에게 숫자 **49의 실제 사례**를 생각하도록 유도하여 수학 책, 게임 HP, 심지어 돈에 대한 토론으로 이어집니다.
* 💡 대화는 학생들이 **레고 세트의 물건, 집 번호, 조각 수 세기 등의 아이디어**를 공유하면서 일상 생활에서 숫자와의 관련성을 강조하는 방식으로 진행됩니다.
* 👥 교사는 계속해서 토론을 진행하면서 지원자에게 자신의 생각을 공유하도록 요청하고 **모든 학생이 참여할 수 있는 기회**를 보장합니다.
* 🔄 학생들은 **공동체 속성을 비롯한 다양한 수학적 속성**을 탐구하는 동시에 협업 학습을 통해 이해를 강화합니다.
* 📊 세션이 마무리되면서 학생들은 **숫자 49를 다양한 방식으로 표현**하는 데 초점을 맞추며 그날의 수업에 대한 이해를 확고히 합니다.

학생들은 숫자 이야기 중에 숫자 49를 표현하는 여러 가지 방법을 창의적으로 탐구합니다.

Okay, thank you guys. Okay, my students. Um, now today we're going to work on our number of the day, 49. Let's see how can we represent this number. How many ways can you represent? Okay, start. How can we ar? You have one identi property. Okay, 49, 49, 49. Perfect. Look at that, my friends. He did identity prop. Another one. Axel, can you speak a little bit louder, honey? 10, 10. How many T you put? Am I writing it right? Did you do it? Did you do it h horizontal or vertical? Horizontal, horizontal. Okay, and what else do you do? Plus n, plus n. Okay, and how do you know to put 10 + 10 + 10? Because 10 + 10 is 20, and 20. Okay, so you did this is 20, and you did 10 + 10 is 20 like that, and then plus N9. Okay, and then what else do you do? I got. Did you add 20 + 20 or yes? Okay, perfect. Okay, so he did 20 + 20 is 40, and

then plus 9 perfect look how he represent that a number 49 another person okay how about you 29 209 499 do any of you guys got did this uh way using vertical raise your hand if you use this way I want to see you use this way okay I see few kids okay how about raise your hand do this way the identity property oh good job what about H like AB did he he broke it into T raise your hand if you did on T nice okay is there any other way that we we can represent raise your hand please it's Adina and then it's you Evan okay um I I did expand this for uh I did 40 okay 40 plus 9 plus 9 o 40 + 9 look at that my friends that's exactly expanded form raise your hand if you did expanded form look Amy you did it nice you too nice okay now who else can show me another way uh what Evan it was Evan and then is you okay okay let me see okay um she used a

community property you see. Oh, can you speak so I can. Oh, okay, like this, like this. Nice, look at you. And you use what? What? What is it called? Community property. Okay, so you just switch it this way. Yes, okay. Is anybody else did this way? Raise your hand. You did that way. Okay, okay, J. Okay, S. 7. Youed math. Nice, look. He used his MTH seven times. Say with me, say seven times. S. Y. Good job. Okay, another person. Ready? How about you? I use it 49 * 1. What is it? And how do you know that 49 * 1 is 49? That is true. That is true. Okay, so now I'm going to get one more student that did not have a chance. Okay, how about you? Okay, you did what? 50. Did you do horizontal or vertical way? Vertical. So, you put like this minus what number? Yes, that is true. Okay, has anybody did this way? Yes, no. Okay, ready? One last one, Mason. 599. Oh, hold on, I'm sorry. Okay, let me ask you. Did you do vertical or horizontal?

vertical vertical okay so let me move it over here so I can do vertical okay so it's what is it okay 550 so you did minus okay and then 49 equals 49 and how do you know it was equals 49 nice job look at you guys all you guys has anybody came up with this way yeah no look you can use bigger numbers and to make it something right okay my students now I'm going to ask you a question okay let's use our brain I know all of you guys want to share but we're going to keep doing this m my uh number talk tomorrow okay I have a question I want you guys to turn and talk to your partner and tell each other how can I or where can I see the number 49 in real go partner a you tell [Music] me [Music] number9 the on the phone yes okay show me one finger if you still need to think okay are you done if you are done you can put your hands on your back you hear me clap

once. Thank you. If you hear me, clap twice. Thank you. Okay, now you talk to your partner. Now I want for some volunteers to tell me what it is. If we can do it faster, the majority can do it. So we're going to go in order. Okay, you 49, 49. I 49. Nice. Amy, ont, honey, speak louder. The house number on the house numbers. Yes, on our address. Let's go here. Um, maybe like, maybe if you see if you build one out of Legos. If you been build one out of Legos. Yes, that is true. You can have 49 pieces, right? Yeah. How about you, Maya? Um, see, I can see it is the cash register. Cash register. How about you, sweetie? An iPad. An iPad. Yes. How about you? How old someone is. How old someone is. I'm close to that one, actually. How about you, an oven? Yes, Adrian. On the math book. Elias. On the clock. Yes, yes. When we see the times, right? Okay, okay. We're going to go. Uh, did everybody have a chance over

here yeah oh my students were going to be respectful when somebody is sharing. What did you say? Math books? Yes, look, he's using the language. Good job, sweetie. I am so proud of you. On math books? Yes. Okay, now let's go to this group. Not group, uh, let's go with Arayu. Like your HP in a game. HP in a game? Yes. How about you, B? Stop a lot of my together? Yes. Clo, closeth? Yes, yes. If we count them right, how about you guys? Anybody over here wants to share? You're done? How about you? You're, you pass? Okay. How about you and you have what? $4? Yes. And money? Yes. How about you, Seina? Um, like a car? Like how many cars? Yeah, how many cars? Yes. How about you, um, errands in life? Uhhuh. How can you see, uh, the represent number 49? I just use human things like I count letters or bug or rocks. So you're always counting? Nice. Yeah, that's awesome. That's awesome. Okay, how about you? Are you sharing? No, you

pass. So, did everybody have a chance to share? Okay, awesome students. Now than uh now remember now we're going to write erase our whiteboards and tomorrow we're going to do again our number talk. Okay, can you turn it off the okay now.

October 26, 2024

Nilda Pitts

이 수업에서는 숫자 49를 다양한 방법으로 표현하는 작업을 하고 있습니다.

한 학생은 신원 속성을 사용하여 10을 여러 번 더합니다.

이 학생은 또한 20을 더한 다음 다시 20을 더하여 40에 도달하는 식으로 합을 합칩니다.

교사는 학생들이 숫자 49에 대한 토론에 참여하게 하여 이 숫자를 볼 수 있는 실생활의 예를 생각해 보도록 유도합니다.

학생들은 수학 책, 게임 HP, 돈, 글자나 물건 수 세기 등 다양한 예를 공유합니다.

교사는 학생들의 기여를 칭찬하고 서로 존중하는 공유 환경을 조성합니다.

숫자를 표현하는 다양한 방법 탐색하기

학생들은 집 번호, 레고 조각, 금전 등록기 등 숫자 49를 표현하는 다양한 방법을 공유하고 있습니다.

토론에는 같은 숫자에 도달하기 위해 커뮤니티 자산과 곱셈과 뺄셈과 같은 다양한 방법을 사용하는 것도 포함됩니다.

교사는 참여를 독려하고 모든 사람이 자신의 접근 방식을 공유할 수 있도록 하고 있습니다.

숫자 표현에 대한 창의적인 접근 방식

학생들은 토론 중에 숫자를 표현하는 다양한 방법을 공유했습니다.

어떤 학생은 수직 덧셈을 사용했고, 어떤 학생은 동일성 속성을 적용하여 숫자를 10으로 나누기도 했습니다.

확장된 형태도 인기 있는 방법으로, 여러 학생이 손을 들어 자신의 접근 방식을 보여주었습니다.