This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Decompose teen numbers using 10-frames and a number equation. #### Materials * Number cards 11-19 * Pencil, crayon, or marker * Attached student worksh...

Up to this point in Grade K, students have worked intensively within 10 and have often counted to 30 using the Rekenrek during fluency practice. This work sets the stage for this module where students clarify the meaning of the 10 ones and some ones within a teen number and extend that understanding to count to 100.

Find the rest of the EngageNY Mathematics resources at https://archive.org/details/engageny-mathematics.

In this lesson, students will develop fluency for splitting numbers into tens and ones by applying the concept to the concrete example of leaves on plants.

(Nota: Esta es una traducción de un recurso educativo abierto creado por el Departamento de Educación del Estado de Nueva York (NYSED) como parte del proyecto "EngageNY" en 2013. Aunque el recurso real fue traducido por personas, la siguiente descripción se tradujo del inglés original usando Google Translate para ayudar a los usuarios potenciales a decidir si se adapta a sus necesidades y puede contener errores gramaticales o lingüísticos. La descripción original en inglés también se proporciona a continuación.)

Hasta este punto en el Grado K, los estudiantes han trabajado intensamente dentro de 10 y a menudo han contado a 30 utilizando el Rekenrek durante la práctica de fluidez. Este trabajo prepara el escenario para este módulo donde los estudiantes aclaran el significado de los 10 y algunos dentro de un número adolescente y extienden esa comprensión para contar hasta 100.

Encuentre el resto de los recursos matemáticos de Engageny en https://archive.org/details/engageny-mathematics.

English Description:
Up to this point in Grade K, students have worked intensively within 10 and have often counted to 30 using the Rekenrek during fluency practice. This work sets the stage for this module where students clarify the meaning of the 10 ones and some ones within a teen number and extend that understanding to count to 100.

Find the rest of the EngageNY Mathematics resources at https://archive.org/details/engageny-mathematics.

The intent of clarifying statements is to provide additional guidance for educators to communicate the intent of the standard to support the future development of curricular resources and assessments aligned to the 2021 math standards.  Clarifying statements can be in the form of succinct sentences or paragraphs that attend to one of four types of clarifications: (1) Student Experiences; (2) Examples; (3) Boundaries; and (4) Connection to Math Practices.

Kindergarten students often struggle to remember the names of teen numbers and to count objects in a group where the total number is between 10 and 20. These are practice activities to supplement a mathematics curriculum, and not intended as the sole lesson for counting 11-20. They can be used at center time activities, for an intervention, played in partners, or sent home for extra practice. There are four activities that increase in skill level required. There are pages attached to use as paper spinners and paper domino cards (if actual ones not available) as well as number cards and ten frame activity sheets.