Addition and Subtraction On a Number Line | Math Intervention Unit 2nd Grade

Adding and subtracting on a number line is a powerful way to help your 2nd grade students develop mental math skills when adding to 100. This set of 5 lesson plans creates a cohesive unit that will help your 2nd graders build this skill through meaningful and engaging lessons and activities.

Your students will use hands-on tools along with number lines to refine their ability to add and subtract to sums up to 100.

This unit is included in a 2nd Grade Math Intervention Bundle! Support your students throughout their 2nd-grade year in order to close the gaps in understanding and prepare them for success in their 3rd grade year.

Need the flexibility to teach digitally or face-to-face? This unit can also be purchased as a DIGITAL & PRINTABLE resource so that you can seamlessly switch between in-person and online teaching.

This intervention resource is designed to support you with everything you will need in order to intervene for struggling learners who have not yet developed an understanding of how to fluently add and subtract within 100 in the whole group setting with their peers.

Included you will find:

✎ Overview and Organization

The 5 Day Focus resources are designed to be informative and easy to use. I have included an overview of the related standards, an outline organizing the breakdown of how the topic is taught, a table of contents and a page outlining any and all materials that will be needed. I want you to be able to spend your time and energy on looking at your students' results and reflecting on their learning- NOT on organizing materials and trying to figure out how to use this resource!

✎ Assessment

Pre and Post Assessment Materials that mirror one another will allow you to see where your students began and how far they have progressed. I have also included daily exit tickets and a tracking form so that you can easily monitor each of your students. 

✎ Direct Instruction

Instructional lesson activities to use with small groups or individual students. Each of these lessons is detailed and includes hands-on activities. There is gradual release across the 5 days beginning with more concrete models and moving away towards representative and, finally, abstract models. This research-based progression will surely help your students to progress. 

✎ Independent Centers

Each of the 5 lessons also includes an independent practice activity. The independent activities have been created in the style of math centers so that they can be used directly after the instructional lesson but so they can also be used and re-used as students practice their skills.

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Looking for additional second grade units? This unit is a part of a full year bundle!

Included Units:

Building a Foundation

1. Addition and Subtraction to 20 Strategies

2. Addition and Subtraction to 20 Relationships

3. Understanding 2-Digit Numbers

Understanding Place Value to 1,000

4. Understanding 3-Digit Numbers

5. Comparing 3-Digit Numbers

6. 10 or 100 More/10 or 100 Less

Addition & Subtraction Fluency to 100 Strategies

7.Addition & Subtraction to 100 Decomposing Strategies

8. Addition & Subtraction to 100 Number Line Strategies

9. Addition & Subtraction to 100 Related Fact Strategies

Addition & Subtraction Strategies to 1,000

10. Addition to 100 (Strategies Related to the Algorithm)

11. Subtraction to 100 (Strategies Related to the Algorithm)

12. Addition to 1000 (Strategies Related to the Algorithm)

13. Subtraction to 1000 (Strategies Related to the Algorithm)

3rd Grade Foundations

14. Multiplication & Division Foundations