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 A large set of dominoes to affix to a whiteboard or place in a pocket chart, or a regular set to use on a document projector. One set of domi...

This problem helps students practice adding three numbers whose sum are 20 or less.

Students will analyze a provided math problem with an incorrect answer (bug). Students will demonstrate their understanding of the process by identifying the error, solving the problem correctly and providing an explanation. Math problem solving directly correlates with the step by step process that computer science debugging requires. The purpose of this experience is to provide a jumping off point for a deeper understanding of the Computer Science SOLs. This could be the first time your students are exposed to the vocabulary (algorithm, bug, debugging) and can provide a good foundation of the understanding of the vocabulary in a concrete, low-technology way.

This short video and interactive assessment activity is designed to teach second graders an overview of addition (sums to 100).

This video is part of the Learn and Grow with WHRO TV series. Watch Nicole Neice teach about addition.

This is a video overview of addition word problems (to sums of 100) for first graders.

This short video and interactive assessment activity is designed to teach third graders an overview of mixed operations.

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: addition and subtraction i - word problems.

This short video and interactive assessment activity is designed to teach second graders about adding and subtracting (numbers up to 20) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about adding and subtracting fractions - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about adding 3 numbers - word problems.

Adding and subtracting fractions using context as a tool to support student understanding Mathematics Instructional Plans (MIPs) help teachers align instruction with the 2016 Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

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 fourth graders about addition: completing the addition sentence.

These Google Slides are intended to model how to use a Ten Frame when adding to 10.

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.

An interactive lesson for students to practice counting, adding, and writing additon problems within 20.

This course features a video review of addition up to the sum of ten for first graders.