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🎯MI DESAFÍO: ¿Sumamos o restamos?

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🎯MI DESAFÍO: ¿Sumamos o restamos?

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Explorar si el estudiante reconoce qué pasa con las cantidades y elige suma o resta en situaciones breves.

Created by

Aquiles Figueroa
Aquiles Figueroa
Argentina

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🎯MI DESAFÍO: ¿Sumamos o restamos?
 

🎯MI DESAFÍO: ¿Sumamos o restamos?Online version

Explorar si el estudiante reconoce qué pasa con las cantidades y elige suma o resta en situaciones breves.

by Aquiles Figueroa
1

¿Qué operación conviene usar para saber cuántos libros hay ahora?

2

¿Qué operación representa mejor lo que pasó?

3

¿Qué operación conviene usar para saber el total?

4

¿Qué operación ayuda a saber cuántos señaladores quedaron?

5

Mari dice: “Como escuché la palabra devolver, seguro hay que restar”. ¿Qué explicación es correcta?

6

¿Qué pregunta ayuda más a decidir si sumar o restar?

Explicación

Llegaron 3 libros a los 8 que ya había. La cantidad aumenta, por eso la suma representa la situación.

Cuatro cuentos salieron de la caja. La cantidad disminuye, por eso conviene restar.

Queremos juntar las dos cantidades para conocer el total. Por eso conviene sumar.

Se entregaron 6 de los 15 señaladores. Para saber lo que queda, representamos la disminución con una resta.

No elegimos por una palabra aislada. En esta historia los libros ingresan a la biblioteca y la cantidad aumenta.

Para elegir la operación miramos qué sucede con las cantidades y qué necesitamos averiguar.

 
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