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: Materials For each student: * A large index card * A pencil Action Part 1 The teacher will put up the following addition problem: \begin{align} 24 &\ \...

This parent guide supports parents in helping their child at home with the 2nd Grade Math content.

This resource accompanies our Rethink 2nd Grade Math Number & Operations in Base Ten unit. It includes ideas for use, ways to support exceptional children, ways to extend learning, digital resources and tools, tips for supporting English Language Learners and students with visual and hearing impairments. There are also ideas for offline learning. 

This unit was created by the Rethink Education Content Development Team. This course is aligned to the NC Standards for 2nd Grade Math for Number & Operations in Base Ten.

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.

This short video and interactive assessment activity is designed to teach second graders an overview of mixed operations (numbers to 1,000).

This short video and interactive assessment activity is designed to teach second graders about mixed operations: selecting the correct sentence.

This short video and interactive assessment activity is designed to teach second graders an overview of subtraction (numbers to 1,000).

Students should be quite used to explaining their thinking and the strategies they are using with two-digit numbers.  For this standard have students choose a problem with sums or minuends up to 1000.  Have students choose a way to represent their solution, could be with a number line drawing or a set of place value blocks.  Explain to students that they will video each other presenting their solutions.  This lesson was developed by NCDPI as part of the Academically and/or Intellectually Gifted Instructional Resources Project. This lesson plan has been vetted at the state level for standards alignment, AIG focus, and content accuracy.

This short video and interactive assessment activity is designed to teach second graders about fact families (numbers to 1,000).

G2M4: Addition and Subtraction Within 200 with Word Problems to 100. Contains 31 Lessons.

G2M5: Addition and Subtraction Within 1,000 with Word Problems to 100. Contains 41 Lessons.

This lesson details how to facilitate a number talk. The target is 3rd grade students with addition, but this could also be used in 4th grade or at the end of 2nd grade. This task is remixable to provide more supports for various learners.

This lesson describes how to facilitate a number talk for subtraction. The target is 3rd grade students, but this could be adapted and used in 4th grade or at the end of the year in 2nd grade. This is remixable to provide more supports for various learners.

In this lesson, students use manipulatives to represent the composition of 10 ones as 1 ten with two-digit addends.

In this lesson, students represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives.

In this lesson, students use math drawings to represent subtraction with and without decomposition and relate drawings to a written method.

In this lesson, students represent subtraction with and without the decomposition when there is a three-digit minuend.

In this lesson, students represent subtraction with and without the decomposition when there is a three-digit minuend.