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K-5 Grado 3 Unit 2 Lesson 12

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•K-5 Math 6-8 Math 9-12 Math

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Kínder Grado 1 Grado 2 •Grado 3 Grado 4 Grado 5

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Unit 1 •Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 •Lesson 12 Lesson 13 Lesson 14 Lesson 15

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Unit 2
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Unit 4
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IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Lesson 12

Warm-up Activity 1 Activity 2

Unit 2, Lesson 12

Área y suma

Grado 3

Warm-up

Conversación numérica: Tan cerca

Encuentra mentalmente el valor de cada expresión.

Activity 1

Rectángulos dentro de rectángulos

Este rectángulo representa un espacio en una huerta comunitaria. La parte sombreada tiene vegetales y la parte sin sombrear tiene flores. Cada cuadrado representa 1 pie cuadrado.

¿Cuál es el área de todo el espacio?
Diseña tu propia huerta rectangular que tenga al menos dos partes. Encuentra el área de cada parte de la huerta y el área de toda la huerta.

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Activity 2

Encontremos los rectángulos

¿Qué observas? ¿Qué te preguntas?

A figure divided into equal sized square units.

Encuentra el área de esta figura. Explica o muestra tu razonamiento. Organiza tu explicación para que los demás la puedan entender.

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Standards Alignment

Building On

2.NBT.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

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Addressing

3.OA.9

Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.

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Building Toward

3.NBT.2

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

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Standards Alignment

Building On

Addressing

3.MD.7.d

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

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Building Toward

Standards Alignment

Building On

Addressing

3.MD.7.d

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

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Building Toward