1st Grade Math Unit 18

Big Idea:

Investigate the relationships between 2D and 3D shapes

Student Expectations:

Priority TEKS

1.6E [Readiness] Identify 3D solids, including spheres, cones, cylinders, rectangular prisms (including cubes), and triangular prisms, & describe their attributes using formal geometric language;

Focus TEKS

1.6B [Supporting] Distinguish between attributes that define a 2D or 3D figure & attributes that do not define the shape;

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.

1.3C [Supporting] Compose 10 with two or more addends with and without concrete objects;

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;

1.5E [Supporting] Understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same value (s);

1.5F [Supporting] Determine the unknown whole number in an addition or subtraction equation when the unknown may be any one of the 3 or 4 terms in the equation;

1.5C [Supporting] Use relationships to determine the number that is 10 more and 10 less than a given number up to 120;

1.5B [Supporting] Skip count by twos, fives, and tens to determine the total number of objects up to 120 in a set;

Student Learning Targets:

• I will identify 3D shapes.
• I will describe the attributes of shapes
• I will describe the relationship between 2D and 3D shapes.
• I will classify shapes.
• I will write about 3D shapes.

Essential Questions:

• Why are shapes important in our world?

Extra Information:

Adopted Textbook: Pearson - enVision Math

District Grading Policy

Texas Gateway Online Resource Center