In this lesson, students represent teen number compositions and decompositions as addition sentences.

In this lesson, students represent teen number decompositions as 10 ones and some ones, and find a hidden part.

In this lesson, students decompose teen numbers as 10 ones and some ones; compare some ones to compare the teen numbers.

In this lesson, students reason about and represent situations, decomposing teen numbers into 10 ones and some ones, and composing 10 ones and some ones into a teen number.

The Common Core State Standards (CCSS) videos are designed to support states, schools, and teachers in the implementation of selected math standards. Each video is an audiovisual resource that focuses on one or more specific standards through examples and illustrations geared to enhancing understanding. The intent of each content-focused video is to clarify the meaning of the individual standard rather than to be a guide on how to teach each standard, although the examples can be adapted for instructional use.

In this assessment students will be assessed on cardinality, counting in sequence, counting tens and completing number sentences. Students will be given two mystery bags that contain up to twenty objects. Students will count and record the number of objects found in each bag. Students will be asked to circle a group of ten then complete a number sentence. Teachers will need to prep the mystery bags. A rubric and assessment task sheet are available.

This document is the About the Cluster document created by the authors of the NC2ML Instructional Frameworks. Read this document prior to teaching the cluster in order to get insight into the clustering of the standards, mathematics to be taught, and important considerations.

This document is not remixable since the document has been written by creators of the NC2ML Instructional Frameworks.

This kindergarten math unit contains 3 lessons related to counting on a number line.

In this activity, students will show their understanding of making numbers using base 10 blocks. The Number Pieces App allows students to manipulate base 10 blocks electronically to show their understanding of counting concepts.

Students (as astronauts) needs to return to their rocket ship to escape the monster. The astronaut is given a number of steps he/she must take to return to the rocket ship. Students jump to the rock (which represents 10) and then takes subsquent steps to the rocket ship to escape the monster.

This resource is from Tools4NCTeachers.This lesson calls for students to use a ten frame to represent ten ones. Students will demonstrate and verbalize that ten objects is the same as “ten”. They will model teen numbers as ten ones and some extra ones, and demonstrate an understanding that one manipulative goes in each square of the ten frame (builds on one to one understanding).Remix this lesson to share extension ideas or student work-samples.

This resource is part of Tools4NCTeachers.

This file contains directions and materials for ALL Tools4NCTeachers Math Games.

Math games are fun, motivating, and provide opportunities for students to build number concepts, reasoning, and fluency. These games may be used as math stations or as whole group learning opportunities.

The Family Letters are intended to be sent home at the beginning and middle of the cluster. They explain big ideas of the cluster using family-friendly language. Families can also find tips for working with their children at home, digital games, videos, and books. This file contains both English and Spanish versions of the Family Letters.

The intended purpose of this document is to provide teachers with a tool to determine student understanding and suggest instructional moves that may help guide a student forward in their learning. It is not an exhaustive list of strategies.

This resource is from Tools4NCTeachers.This is a set of two tasks, which may be used for instruction or assessment.  Each file contains a separate task and rubric.  Remix this resource to include extension ideas or addtional tasks, or samples of student-work.

This resource is from Tools4NCTeachers. In this lesson, students will compose a teen number into ten ones and some extra ones.  They will work to identify and record how many ones are on the ten frame, off the ten frame, and the total. Remix this lesson to include extension ideas or student work samples.

This resource is from Tools4NCTeachers.Students will identify and record mystery numbers with partners.  They will organize quantities of objects into ten ones and some extra ones, developing an understanding of how ten ones and some extra ones can be combined to make a total.  Further, students will tell how two quantities are the same and different (example: One group of seventeen ones verses a group of ten ones in a ten frame and seven ones on the outside of the frame.)