# Lesson 6

Dedos y tableros de 10

## Warm-up: Cuántos ves: 5 y algunos más (10 minutes)

### Narrative

The purpose of this How Many Do You See is to allow students to use subitizing or grouping strategies to describe the images they see.

In this activity, students have an opportunity to look for and make use of the 5 and some more structure of fingers (MP7).

### Launch

• Groups of 2
• “¿Cuántos ven? ¿Cómo lo saben?, ¿qué ven?” // “How many do you see? How do you see them?”
• Flash the image.
• 30 seconds: quiet think time

### Activity

• Display the image.
• “Discutan con su pareja lo que pensaron” // “Discuss your thinking with your partner.”
• 1 minute: partner discussion
• Record responses.
• Repeat for each image.

### Student Facing

¿Cuántos ves?
¿Cómo lo sabes?, ¿qué ves?

### Activity Synthesis

• “¿Cómo puedo mostrar 11 con mis dedos?” // “How can I show 11 on my fingers?” (You don’t have enough fingers. You could work with a friend.)

## Activity 1: Muchos dedos (10 minutes)

### Narrative

The purpose of this activity is for students to use fingers to represent numbers 11–19. Initially students represent numbers 5–10 to recall the structure of 5 and some more for these numbers. Students work with a partner to represent numbers 11–19, which highlights that these numbers are 10 ones and some more ones. The purpose of the activity synthesis is to describe numbers 11–19 as “10 y _____” // “10 and _____.” In future lessons, numbers 11–19 will also be represented as expressions: $$10 + 4$$ and equations: $$10 + 4 = 14$$.

### Launch

• Groups of 2
• “Muestren 5 con sus dedos” // “Show 5 with your fingers.”
• 30 seconds: independent work time
• Invite a student who holds up 1 hand without counting their fingers to share.
• “¿Como saben que tienen levantados 5 dedos?” // “How do you know that you are holding up 5 fingers?” (I know I have 5 fingers on each hand.)
• “Muestren 6 con sus dedos. ¿Su pareja y ustedes mostraron 6 de la misma forma?” // “Show 6 with your fingers. Did you and your partner show 6 the same way?”
• 1 minute: partner work time
• “Muestren 10 con sus dedos” // “Show 10 with your fingers.”
• Invite a student who holds up all of their fingers without counting them to share.
• “¿Cómo saben que tienen levantados 10 dedos?” // “How do you know that you’re holding up 10 fingers?” (I know that I have 10 fingers, so I put them all up.)

### Activity

• “Muestren 13 con sus dedos” // “Show 13 with your fingers.” (I can’t, because I only have 10 fingers.)
• 30 seconds: independent work time
• “Junto con un compañero, muestren 13 con sus dedos” // “Work with a partner to show 13 with your fingers.”
• 1 minute: partner work time
• Monitor for groups in which 1 partner holds up 10 fingers and the other partner holds up the rest of the fingers.
• Repeat with numbers 15, 18, and 20.

### Activity Synthesis

• Invite previously identified students to share 17 with their fingers.
• “¿Cuántos dedos tiene levantados ______?” // “How many fingers is _____ holding up?” (10)
• “¿Cuántos dedos tiene levantados ______?” // “How many fingers is _____ holding up?” (7)
• “¿Cuántos dedos tienen levantados en total?” // “How many fingers are they holding up altogether?” (17)
• “10 y 7 es 17” // “10 and 7 is 17.”

## Activity 2: De dedos a tableros de 10 (10 minutes)

### Narrative

The purpose of this activity is for students to recognize numbers 11–19 on images of fingers and represent the same numbers on 10-frames. Students may count each finger and each counter as they create groups with the same number of counters as fingers. They may make a connection between all the fingers on two hands and a full 10-frame and use that connection to make a group with the same number by filling in a 10-frame and then attending to how many additional fingers there are (MP7). If students represent numbers on the 10-frame without counting, ask, “¿Cómo saben, sin contarlas, que tienen el mismo número de fichas que de dedos?” // “How do you know you have the same number of counters and fingers without counting them?”

In the activity synthesis, students discuss and compare different ways to arrange the additional counters that do not fit on the 10-frame. While students may arrange their additional counters in a way that makes sense to them, these materials will show the additional counters arranged under the 10-frame.

MLR8 Discussion Supports. Invite each partner to say the number that is displayed. This gives both students an opportunity to produce language. Listen for and clarify any questions.
Representation: Develop Language and Symbols. Synthesis: Make connections between representations visible by using gestures or labeled displays as students describe where they see the ten fingers from the image in their representation. If time permits, ask students what the hand with zero fingers showing represents.
Supports accessibility for: Conceptual Processing

### Required Materials

Materials to Gather

### Launch

• Groups of 2
• Give each group a 10-frame and counters.
• “Un compañero descifra cuántos dedos hay. El otro compañero muestra el mismo número de fichas en un tablero de 10. Háganlo por turnos en cada problema” // “One partner figures out how many fingers there are. The other partner shows the same number of counters on a 10-frame. Take turns for each problem.”

### Activity

• 5 minutes: partner work time
• Monitor for students who arrange the additional counters underneath or on the side of the 10-frame in different ways.

### Activity Synthesis

• Display previously selected arrangements, such as:
• “¿En qué se parecen la forma en la que ______ mostró 14 y la forma en  la que ______ lo hizo? ¿En qué son diferentes?” // “What is the same about how _____ and _____ showed 14? What is different?” (They both used counters.They both filled in the 10-frame. _____ put the counters underneath the 10-frame and _____ put the counters next to the 10-frame.
• “¿En qué parte del trabajo de cada persona ven 10?” // “Where do you see 10 in each person’s work?” (There are 10 counters in each 10-frame.)
• “¿En qué parte del trabajo de cada persona ven 4?” // “Where do you see 4 in each person’s work?” (There are 4 counters underneath or 4 counters on the side.)
• Display “14.”
• “Hay 10 fichas y 4 fichas. Hay 14 fichas. 10 y 4 es 14” // “There are 10 counters and 4 counters. There are 14 counters. 10 and 4 is 14.”

## Activity 3: Retomemos “Carrera con números: Números del 11 al 20” (25 minutes)

### Narrative

The purpose of this activity is for students to revisit stage 2 of the Number Race center. In an earlier variation, students traced numbers 11-20. Students practice recognizing and writing numbers as they roll a connecting cube onto the mat and write the number that it lands on. Students continue rolling and writing until one number “wins” (all of the numbers in the column are written). After students have written all of one number, they can finish writing the rest of the numbers. Students can use different colors or writing utensils during this center. Writing numbers backwards (“reversals”) and incorrectly forming numbers is expected in kindergarten. The emphasis is on students writing a number that is recognizable to others with practice.

After they participate in the center, students choose from any stage of previously introduced centers.

• Grab and Count
• Find the Pair
• Tower Build

### Required Materials

Materials to Gather

Materials to Copy

• Number Mat 11–20
• Number Race Stage 2 Recording Sheet for Writing

### Required Preparation

• Each group needs 1 connecting cube.
• Gather materials from:
• Grab and Count, Stage 1
• Find the Pair, Stage 1
• Tower Build, Stages 1 and 2

### Launch

• Give each student a recording sheet. Give each group of students a number mat and access to colored pencils, crayons, or markers.
• Display the recording sheet.
• “Vamos a aprender una nueva forma de jugar el centro ‘Carrera con números’. ¿Qué observan?” // “We are going to learn a new way to play the Number Race center. What do you notice?” (The numbers are written at the bottom. There aren’t numbers to trace.)
• 30 seconds: quiet think time
• Share responses.
• “En lugar de trazar los números, vamos a practicar cómo escribir los números. ¿Qué hacen en cada turno cuando juegan ‘Carrera con números’ con su pareja”? // “Instead of tracing numbers we will practice writing numbers. What do you do each turn when you play Number Race with your partner?”

### Activity

• If needed, say: “Lancen el dado en el tablero de números. Encuentren el número en su hoja de registro y escriban ese número en la casilla de más abajo. Por turnos, lancen y escriban hasta que llenen todas las casillas de un número. Ese número es el ganador” // “Roll the cube onto the number mat. Find that number on your recording sheet and write that number in the bottom box. Take turns rolling and writing until you’ve written all of one number. That number is the winner.”
• 5 minutes: partner work time
• “Ahora pueden escoger qué otro centro les gustaría jugar. También pueden seguir jugando ‘Carrera con números’” // “Now you can choose another center that you would like to do. You can also continue playing Number Race.”
• Display the student page with center choices.
• Invite students to work at the center of their choice.
• 10 minutes: center work time
• If time, invite students to choose another center.

### Student Facing

Escoge un centro.

Carrera con números

Agarra y cuenta

Encuentra la pareja

Construcción de torres

### Activity Synthesis

• “Cuéntenle a su pareja algo que hayan observado sobre cómo escribir los números del 11 al 20” // “Tell your partner something you noticed about writing the numbers 11–20.” (They all start with a 1 except 20. They all have 2 numbers. The second number gets bigger in each number. You don’t write them the way they sound. For example, fourteen sounds like you write a 4 first but you don’t.)

## Lesson Synthesis

### Lesson Synthesis

“Hoy mostramos números con nuestros dedos y con tableros de 10. Si estuvieran trabajando solos y tuvieran que mostrar el número 15, ¿usarían sus dedos o un tablero de 10 para mostrar el número? ¿Por qué escogerían mostrar 15 de esta forma?” // “Today we showed numbers on fingers and 10-frames. If you were working alone and had to show the number 15, would you use fingers or a 10-frame to show the number? Why would you choose to show 15 this way?” (I would use a 10-frame because I don’t have enough fingers to show 15. I only have 10 fingers. I need 5 more.)