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: Maned wolves are a threatened species that live in South America. People estimate that there are about 24,000 of them living in the wild. The dhole is ...

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.

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 third graders about creating largest and smallest numbers given digits.

This short video and interactive assessment activity is designed to teach fourth graders about arranging numbers in specific order (numbers to 1,000).

This short video and interactive assessment activity is designed to teach third graders about arranging numbers in specific orders.

This short video and interactive assessment activity is designed to teach third graders about before and after problems.

This instructional task requires students to figure out word problems that require thinking in base 10.

Students work with a partner to build a train using snap cubes of the same color and determine the number of tens and ones they have. Students draw the train to show how they counted the cubes.

In this task students determine the number of hundreds, tens and ones that are necessary to write equations when some digits are provided. Students must, in some cases, decompose hundreds to tens and tens to ones.

This short video and interactive assessment activity is designed to teach third graders about place value problems involving grouping of items.

This short video and interactive assessment activity is designed to teach fourth graders about using greater than and less than.

In this activity, students will work in small groups to change a chocolate chip cookie recipe that feeds 10 to one that feeds 100. Then students will change it again to feed 2000.

This short video and interactive assessment activity is designed to teach third graders about comparing values of two numbers.

This short video and interactive assessment activity is designed to teach second graders about comparing values of multiple numbers within a set.

This short video and interactive assessment activity is designed to teach fourth graders about comparing values of two numbers ii.

This short video and interactive assessment activity is designed to teach third graders about dual place value.

This short video and interactive assessment activity is designed to teach fourth graders about dual place value.

This short video and interactive assessment activity is designed to teach third graders about comparing numbers using greater than and less than.

This short video and interactive assessment activity is designed to teach fourth graders about comparing values of two numbers.