MA19.2.1

Mathematics (2019) Grade(s): 2

MA19.2.1
Use addition and subtraction within 100 to solve one- and two-step word problems by using drawings and equations with a symbol for the unknown number to represent the problem.

Unpacked Content

Knowledge

Students know:

addition and subtraction strategies to solve one- and two-step word problems within a 100.

Skills

Students are able to:

represent quantities and operations (addition & subtraction) physically, pictorially, or symbolically.
strategically use a variety of representations to solve addition and subtraction word problem.
use informal and mathematical language to communicate the connections among addition and subtraction.
accurately compute sums and differences.
use symbols to represent unknown quantities in equations.

Understanding

Students understand that:

addition is both putting together and adding to.
subtraction is taking apart, taking from, and comparisons.
mathematical problems can be solved using a variety of strategies, models, representations.
variables represent unknown quantities when representing mathematical situations algebraically.

Vocabulary

One-step word problems
Two-step word problems

Aligned Learning Resources

Whoa! Where'd It Go? (States of Matter Data Collection)

Building Blocks of Ten--Rise and Shine: Math Time

Addition & Subtraction Equations StudyJam

Creating Equations From Word Problems StudyJam

A Walk in the Park: Odd Squad

The Pringle Ringle

Design by Adaptive Theme