1st Grade Math Unit 4

Big Idea:

Problem Solving with subtraction using different strategies.

Student Expectations:

Priority TEKS

1.3B [Supporting] Use objects & pictorial models to solve word problems involving joining, separating, and comparing sets within 20 & unknowns as any one of the terms in the problem such as 2+4=__, 3+7=__, and 5= __-3;

1.3D [Supporting] Apply basic fact strategies to add & subtract within 20, including making 10 and decomposing a number leading to 10;

1.3E [Supporting] Explain strategies used to solve addition & subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences;

Focus TEKS

1.3F [Readiness] Generate & solve problem situations when given a number sentence involving addition or subtraction of numbers within 20;

1.5D [Readiness] Represent word problems involving addition & subtraction of whole numbers up to 20 using concrete & pictorial models & number sentences;

Ongoing TEKS

1.2(A-C)Number and Operations - The student applies mathematical process standards to represent and compare whole numbers, the relative position and magnitude of whole numbers, and relationships within the numeration system related to place value. The student is expected to: (A) recognize instantly the quantity of structured arrangements; (B) use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones; (C) use objects, pictures, and expanded and standard forms to represent numbers up to 120.

1.3D [Supporting] Apply basic fact strategies to add & subtract within 20, including making 10 and decomposing a number leading to 10;

1.3E [Supporting] Explain strategies used to solve addition & subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences;

Student Learning Targets:

• I will find a missing number when the whole and a part are known
• I will use subtraction number sentences to show a missing part
• I will write a story problem related to subtraction

Essential Questions:

• What is the relationship between the parts and a whole?
• How would you solve for an unknown number?
• How can we solve the same problem in more than one way?

Extra Information:

Adopted Textbook: Pearson - enVision Math

District Grading Policy

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