Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.
Number: MAFS.2.MD.2
Title: Relate addition and subtraction to length. (Major Cluster)
Type:
Cluster
Subject: Mathematics - Archived
Grade: 2
Domain-Subdomain: Measurement and Data
Related Standards
This cluster includes the following benchmarks
| Code |
Description |
| MAFS.2.MD.2.5: | Use addition and subtraction within 100 to solve word problems
involving lengths that are given in the same units, e.g., by using
drawings (such as drawings of rulers) and equations with a symbol for
the unknown number to represent the problem. |
| MAFS.2.MD.2.6: | Represent whole numbers as lengths from 0 on a number line diagram
with equally spaced points corresponding to the numbers 0, 1, 2, ..., and
represent whole-number sums and differences within 100 on a number
line diagram. |
Related Access Points
This cluster includes the following access points.
Access Points
| Access Point Number |
Access Point Title |
| MAFS.2.MD.2.AP.5a: | Solve addition and subtraction word problems involving the difference in standard length units. |
| MAFS.2.MD.2.AP.6a: | Use number lines to solve addition or subtraction problems up to 100. |
Related Resources
Vetted resources educators can use to teach the concepts and skills in this topic.
Original Student Tutorials
| Name |
Description |
| Construction Measurement Mix-Up: | Add and subtract within 100 to solve word problems involving lengths in the same units to fix the construction mix-up at a school in this interactive tutorial. |
| Racing Riley Adds Lengths: | Learn different strategies for adding two-digit numbers and solve problems involving lengths as you complete this interactive tutorial. |
Formative Assessments
Lesson Plans
| Name |
Description |
| Wilbur's Pig Pen Addition: | Students will explore the fundamentals of adding measurements involving shapes. Students will practice measuring the sides of rectangles and engage in an extended problem-solving task that includes adding to find the distance around rectangles. |
| Get Up and Go! with Addition and Subtraction: | The lesson involves students adding and subtracting on a number line while follwoing a story that explains the amount of time taken to get ready in the morning. Students will write addition and subtraction equations to represent the parts of the story. |
Tutorials
| Name |
Description |
| Solving word problems within 100: | This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers. |
| Subtracting within 100 using the standard algorithm: | In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram. |
Student Resources
Vetted resources students can use to learn the concepts and skills in this topic.
Original Student Tutorials
| Title |
Description |
| Construction Measurement Mix-Up: | Add and subtract within 100 to solve word problems involving lengths in the same units to fix the construction mix-up at a school in this interactive tutorial. |
| Racing Riley Adds Lengths: | Learn different strategies for adding two-digit numbers and solve problems involving lengths as you complete this interactive tutorial. |
Tutorials
| Title |
Description |
| Solving word problems within 100: | This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers. |
| Subtracting within 100 using the standard algorithm: | In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram. |
Parent Resources
Vetted resources caregivers can use to help students learn the concepts and skills in this topic.
Tutorials
| Title |
Description |
| Solving word problems within 100: | This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers. |
| Subtracting within 100 using the standard algorithm: | In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram. |
