Lesson 3

Mesa redonda sobre fracciones

Warm-up: ¿Qué sabes sobre $\frac{1}{8}$? (10 minutes)

Narrative

The purpose of this What Do You Know About _____ is to invite students to share what they know about and how they can represent the number \(\frac{1}{8}\).

Launch

  • Display the number.
  • “¿Qué saben sobre \(\frac{1}{8}\)?” // “What do you know about \(\frac{1}{8}\)?”
  • 1 minute: quiet think time
Activity
  • Record responses.
  • “¿Cómo podemos representar el número \(\frac{1}{8}\)?” // “How could we represent the number \(\frac{1}{8}\)?”

Student Facing

¿Qué sabes sobre\(\frac{1}{8}\)?

Student Response

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Activity Synthesis

  • “¿Qué conexiones ven entre las distintas respuestas?” // “What connections do you see between different answers?”

Activity 1: Mesa redonda sobre fracciones (35 minutes)

Narrative

The purpose of this activity for students to think about and discuss statements that address their understanding of important ideas about fractions. Students will consider ideas about how fractions are defined, comparing fractions, and how fractions relate to whole numbers. It is not necessary for each group to discuss all of the statements, but if there are any you’d like to make sure each group discusses, let them know at the start of the activity.

Students construct viable arguments to explain their choices (MP3) and in order to do so they need to use key fraction language, such as whole and equal-size piece, precisely (MP6).

MLR8 Discussion Supports.Synthesis: Provide students with the opportunity to rehearse what they will say with a partner before they share with the whole class.
Advances: Speaking
Engagement: Develop Effort and Persistence: Chunk this task into more manageable parts. Check in with students to provide feedback and encouragement after each round.
Supports accessibility for: Organization, Focus

Launch

  • Groups of 4
  • “Lean las instrucciones de la actividad de hoy durante un minuto. Van a discutir con su grupo algunas afirmaciones sobre las fracciones” // “Take a minute to read the directions for today’s activity. You will be discussing statements about fractions with your group.”
  • 1 minute: quiet think time

Activity

  • Consider walking students through the process and answer any questions.
  • 25–30 minutes: small-group work time

Student Facing

Discute con tu grupo cada afirmación en 3 rondas.

  • Ronda 1: Dile a tu grupo si estás de acuerdo, en desacuerdo o no estás seguro sobre la afirmación, y justifica tu elección. Puedes cambiar tu respuesta en la siguiente ronda.
  • Ronda 2: Dile a tu grupo si estás de acuerdo, en desacuerdo o no estás seguro sobre la afirmación que tú o alguien más hizo en la primera ronda. Puedes cambiar tu respuesta en la siguiente ronda.
  • Ronda 3: Ahora que la discusión terminó, di y marca la frase para mostrar si estás de acuerdo, en desacuerdo o no estás seguro sobre la afirmación.

Repite las rondas para tantas afirmaciones como puedas.

Student Response

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Activity Synthesis

  • “¿Hubo alguna afirmación sobre la que hayan cambiado de opinión durante la discusión en grupo? ¿Cuál fue la afirmación? ¿Qué los hizo cambiar de opinión?” // “Was there a statement that you changed your mind about during your group's discussion? What was the statement? What made you change your mind?”
  • Consider asking:
    • “¿Sobre cuáles afirmaciones tienen preguntas todavía?” // “What statements do you still have questions about?”

Lesson Synthesis

Lesson Synthesis

“¿Sobre cuál afirmación discutieron más en su grupo y por qué?” // “Which statement did your group have the most discussion about and why?” (We discussed the idea that one half is always greater than one third the most because some people agreed and some disagreed.)

Cool-down: Reflexiona sobre la mesa redonda (5 minutes)

Cool-Down

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