enVision Mathematics Topic 7
2nd Grade; December (3 weeks); 2nd Trimester
Embedded Files
Topic Title(s):
More Solving Problems Involving Addition and Subtraction
Prepared Graduates:
MP2. Reason abstractly and quantitatively.
MP4. Model with mathematics.
Standard(s):
2. Algebra and Functions
The highlighted evidence outcomes are the priority for all students, serving as the essential concepts and skills. It is recommended that the remaining evidence outcomes listed be addressed as time allows, representing the full breadth of the curriculum.
Students Can (Evidence Outcomes):
2.OA.A. Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. (see Appendix: Table 1) (CCSS: 2.OA.A.1)
Decontextualize word problems, use mathematics to solve, and then recontextualize to provide the answer in context. (MP2)
Represent situations in word problems using drawings and equations with symbols for unknown numbers. (MP4)
Inquiry Questions
(Given a word problem) What is the unknown quantity in this problem?
(Given an addition or subtraction problem) How might you use a model to represent this problem?
Does the word “more” in a word problem always mean that you will use addition to solve the problem? Why or why not?
Coherence Connections
This expectation represents major work of the grade.
In Grade 1, students use place value understanding and properties of operations to represent and solve problems involving addition and subtraction.
This expectation connects with other ideas in Grade 2: (a) using place value understanding and properties of operations to add and subtract, (b) relating addition and subtraction to length, (c) working with time and money, and (d) representing and interpreting data.
In Grade 3, students solve problems involving the four operations and identify and explain patterns in arithmetic.
Academic Vocabulary & Language Expectations:
Assessments:
Instructional Resources & Notes:
enVision Mathematics Topic 7
Additional enVision Mathematics Resources
Let's Investigate! Balance the Board (TE) (supports Lessons 7-6, 7-7)
Additional Math Games: Addition & Subtraction Within 100 (additional materials and preparation may be required)
Tier 1 Intervention & Supports (i-Ready Tools for Instruction):
Tier 1 Intervention: Solve Subtraction Word Problems, Two-Digit Addition and Subtraction
Coherence Map/Concept Progressions: 2.OA.A.1
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