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Activity 1

Standards Alignment

Building On

Addressing

Building Toward

Instructional Routines

None

Materials

To Gather

Connecting cubes in towers of 10 and singles

Activity Narrative

The purpose of this activity is for students to use their understanding of place value to find a secret number in a number riddle. Initially, students are given clues that could have more than one secret number to encourage them to think about all the possibilities. Then they receive a clue that allows them to figure out the secret number. Students will solve this type of riddle in small groups in the next activity.

Launch

Groups of 3
Give students access to connecting cubes in towers of 10 and singles.
“Vamos a resolver acertijos numéricos. Resolvamos uno juntos. Yo escogí un número secreto y les voy a dar tres pistas para ayudarles a identificar mi número” // “We are going to solve number riddles. Let's do one together. I have chosen a secret number and will give you three clues to help you identify my number.”
Display the clues in the student book.
“Usen las pistas para identificar qué números podrían ser mi número secreto. Las pistas no están en ningún orden específico. Pueden usar cualquier pista para empezar” // “Use the clues to identify numbers that could be my secret number. The clues aren’t in any specific order. You can use any clue to start.”

Activity

4 minutes: small-group work time
Monitor for groups of students who started with different clues.
“¿Alguien sabe cuál es mi número secreto?” // “Does anyone know my secret number?” (It could be 34, 44 or 54, because they all fit the clue.)
Display and read the new clue: “Mi número es la suma de 24 y 20” // “My number is the sum of 24 and 20.”
“¿Cuál es mi número secreto?” // “What is my secret number?”
Share responses.

Mi número es menor que 60.

Mi número tiene 4 unidades.

Mi número es mayor que 30.

¿Qué números se ajustan a estas pistas?

Número secreto: ___________

Student Response

to access Student Response.

Advancing Student Thinking

Activity Synthesis

“Como acabamos de ver, algunas veces hay varios números diferentes que se ajustan a las pistas hasta que obtenemos la última pista. Tengan esto en mente cuando resuelvan acertijos numéricos con su grupo en la siguiente actividad” // “As we just saw, sometimes many different numbers fit the clues until you get the last clue. Keep that in mind as you solve number riddles with your group in the next activity.”

Activity 2

Standards Alignment

Building On

Addressing

Building Toward

Instructional Routines

None

Materials

To Copy (from Blackline Masters)

More Number Riddles Cards, Spanish

To Gather

Bags or envelopes Connecting cubes in towers of 10 and singles

Activity Narrative

The purpose of this activity is for students to solve number riddles to find a secret number. Students work together to find the numbers that match the clues and justify why those numbers fit the clues (MP3). Then students read the last clue (shaded gray) and identify the secret number. Students rotate after solving each riddle; it is also possible for students to remain in the same place and trade riddles.

MLR8 Discussion Supports. Prior to solving the riddles, invite students to make sense of the task and take turns sharing their understanding with their partner. Listen for and clarify any questions about the context.
Advances: Conversing, Representing

Representation: Access for Perception. Provide appropriate reading accommodations and supports to ensure student access to written clues on Number Riddle Cards.
Supports accessibility for: Language, Social-Emotional Functioning

Launch

Groups of 2
Give each group an envelope with a riddle and access to connecting cubes in towers of 10 and singles.

Activity

“Van a resolver acertijos numéricos. Cada acertijo tiene 4 pistas. Una de las pistas está sombreada y doblada. Esa es su última pista. Lean las demás pistas y descubran juntos cuáles números cumplen lo que dicen las pistas. Cuando estén de acuerdo en los números que cumplen lo que dicen todas las pistas, lean la pista que está sombreada y doblada. Encuentren juntos la respuesta y escríbanla en su libro. Luego, pongan todas las pistas nuevamente en el sobre y prepárense para pasar al siguiente acertijo. Yo les diré cuándo pasar al siguiente” // “You are going to solve number riddles. Each riddle has 4 clues. One clue is shaded and folded. This is your last clue. Read the other clues and work together to figure out which numbers fit the clues. Once you agree on what numbers fit all the clues, read the shaded, folded clue. Work together to find the answer and write your answer in your book. Then put all the clues back in the envelope and get ready to move on to the next riddle. I will let you know when to move.”
20 minutes: partner work time

Números secretos

A: __________

B: __________

C: __________

D: __________

E: __________

F: __________

G: __________

H: __________

I: __________

J: __________

Activity Synthesis

Invite students to share the secret number for each riddle.

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Settings

Language

Audience

Assessment Access

Lesson 9

Resolvamos acertijos numéricos

Warm-up

Instructional Routines

Materials

Activity Narrative

Launch

Activity

Student Response

Advancing Student Thinking

Activity Synthesis

Activity 1

Standards Alignment

Building On

Addressing

1.NBT.B

1.NBT.C

Building Toward

Instructional Routines

Materials

To Gather

Activity Narrative

Launch

Activity

Student Response

Advancing Student Thinking

Activity Synthesis

Activity 2

Standards Alignment

Building On

Addressing

1.NBT.B

1.NBT.C

Building Toward

Instructional Routines

Materials

To Copy (from Blackline Masters)

To Gather

Activity Narrative

Launch

Activity

Activity Synthesis

Lesson Synthesis

Standards Alignment

Building On

Addressing

1.NBT.B.3

Building Toward

Student Response

Advancing Student Thinking