This short video and interactive assessment activity is designed to teach second graders an overview of subtraction (numbers up to 20).

Students represent subtraction with objects, fingers, mental images, drawings, sounds, acting out situations, verbal explanations, expressions or equations. 

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

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

In this engaging interactive, students use the picture to tell how many more children are needed to fill up 10 sled slots.

Using the online interactive students use an open numberline to find the difference of each problem.

This is a video and interactive assessment activity designed to help first graders learn about subtraction word problems up to twenty.

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

This short video and interactive assessment activity is designed to teach second graders about subtracting by counting backward with pictures.

This course features a video review and an assessment practice of subtracting by crossing out with pictures for word problems. It is aimed at first grade math students.

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

This short video and interactive assessment activity is designed to give fourth graders an overview of addition (sums to 1,000).

This short video and interactive assessment activity is designed to teach third graders an overview of addition (sums to 1,000).

This resource is from Tools4NCTeachers.  In this lesson, students will be figuring out the addends that add up to the correct sums.  They will also be creating and solving equations with more than two addends.Extension and differentiation ideas are provided.

This resource is part of Tools4NCTeachers.

In this lesson, students solve a word problem using a strategy of choice and share the strategy to develop the concept of representing and solving problems involving addition and subtraction within 20. This problem type will likely provide an opportunity to explore the commutative property with students. This lesson format may be used with any problem type appropriate for the grade.

This resource is from Tools4NCTeachers. This file contains a set of 4 tasks (including scoring rubric and student recording sheet).  The tasks may be used for instruction or assessment.Remix this resource to include student work samples or addtional tasks.

This resource is from Tools4NCTeachers. This file contains a set of 2 tasks (including scoring rubrics and student recording sheets).  The tasks may be used for instruction or assessment.  Each focuses on strategies for adding and subtracting within 20.Remix this resource to include student work samples or addtional tasks.

This resource is from Tools4NCTeachers.  This is a set of five 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.

This resource is from Tools4NCTeachers.The goals of this lesson are to a) use objects or drawings to find the number that makes 10 when added to a known number, and b) record answers using drawings or expressions.Remix this lesson to share addtional problems, extension ideas, or student work samples.

This resource is part of Tools4NCTeachers.

This assessment may be used for instructional or assessment purposes. A scoring rubric is included.