This short video and interactive assessment activity is designed to teach fifth graders about adding and subtracting.

This short video and interactive assessment activity is designed to teach fourth graders about adding and subtracting money with pictures in columns.

This is an interactive assessment and video designed to teach Adding and Subtracting (Numbers up to 20) - Word Problems to first graders.

This short video and interactive assessment activity is designed to teach fourth graders about adding and subtracting terms (numbers to 100).

This short video and interactive assessment activity is designed to teach fifth graders about adding and subtracting with parentheses.

This short video and interactive assessment activity is designed to teach fourth graders about addition: completing the addition sentence.

The purpose of this task is to study some patterns in a small addition table. Each pattern identified persists for a larger table and if more time is available for this activity students should be encouraged to explore these patterns in larger tables.

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 aspects of the task and its potential use.

Learn the basics of addition and subtraction, then practice what you've learned using our interactives.

Lessons include: (1) Introduction to Addition. Learn the basics of addition, then use our interactives to practice what you've learned. (2) Adding Two- and Three- Digit Numbers. Learn how to add two- and three-digit numbers, then use our interactives to practice what you've learned. (3) Video: Addition. In this video, you'll get the basics down of adding numbers.

This short video and interactive assessment activity is designed to teach third graders about one step addition and subtraction - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about one step metric capacity with addition and subtraction - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about addition in kilograms.

This short video and interactive assessment activity is designed to teach fourth graders about addition of capacities - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about addition of compound unit capacities - word problems.

This short video and interactive assessment activity is designed to teach third graders about addition of sequential capacities - word problems.

This short video and interactive assessment activity is designed to teach second graders an overview of addition (sums to 10).

This short video and interactive assessment activity is designed to teach second graders an overview of addition.

Spreadsheets across the Curriculum Module. Students build a spreadsheet to calculate proper medicine dosages using the metric system.

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