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The purpose of this Number Talk is to elicit strategies and understandings students have for adding or subtracting 1 or 2 within 10. When students add or subtract 1 or 2 and see that the result is 1 or 2 more or less in the count sequence, they are looking for and making sense of structure (MP7). These understandings help students develop fluency and will be helpful later in this lesson when students will need to be able to answer “how many?” questions about survey data.
Encuentra mentalmente el valor de cada expresión.
The purpose of this activity is for students to determine whether or not questions about data can be answered by using a given data representation. Students explain why questions can or cannot be answered with the representation. When students explain why some questions can not be answered, they think carefully about the meaning of the data representation, what it allows them to conclude, and what it does not allow them to conclude (MP6).
Elena les pregunta a sus compañeros: “¿Qué materia de la escuela es tu favorita?”
Ella muestra sus respuestas.
Han escribió preguntas sobre los datos de Elena.
En cada caso, decide si la pregunta se puede responder usando la representación de los datos.
Prepárate para explicar por qué.
The purpose of this activity is for students to think of questions that can be answered using the data representation they create as they collect data from the class. Although there are two different sets of data, all of the questions students ask should be able to be answered using either data set. Questions are compiled during the Activity Synthesis and will be used in the following activity.
To make it very clear that there are two data sets, make two copies of the representation shown in the student book and label them “Group A” and “Group B.” Then use the appropriate copy to record the data for each group.
Nuestro __________________________________________________ favorito
|
categoría 1 |
categoría 2 |
categoría 3 |
|---|---|---|
If students ask questions that cannot be answered by the data, consider asking:
The purpose of this activity is for students to ask and answer questions about data. Partners ask each other questions about the data collected in the previous activity. Most of the questions should be able to be answered using the data representation. However if a question can’t be answered, the students should explain to their partner why they can’t answer the question using the data representation. Connecting cubes should be available to all students, since some questions may require adding within 20.
“Hoy hicimos y respondimos preguntas sobre datos. Si quieren hacer preguntas que se puedan responder usando su representación de datos, ¿qué deben tener en cuenta?” // “Today we asked and answered questions about data. What do you need to think about when asking questions to be sure they can be answered using your data representation?” (Make sure you are asking about the categories included in the data. Ask “how many” questions instead of a question like “Who chose math?”)
Recolectamos datos con una encuesta.
Mostramos los datos de diferentes formas.
Podemos mostrar datos usando marcas de conteo.
Podemos mostrar datos usando números.
Hicimos y respondimos preguntas sobre datos.