2nd Grade Math Unit 7

Big Idea:

Identify shapes by the number of vertices and sides

Student Expectations:

Priority TEKS

2.8(A) [Supporting] create two‐dimensional shapes based on given attributes, including number of sides and vertices

Focus TEKS

2.8(B) [Readiness] classify and sort three‐dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language

2.8(C) [Readiness] classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices

2.8(D) [Supporting] compose two‐dimensional shapes and three‐dimensional solids with given properties or attributes

2.8(E) [Supporting] decompose two‐dimensional shapes such as cutting out a square from a rectangle, dividing a shape in half, or partitioning a rectangle into identical triangles and identify the resulting geometric parts

Ongoing TEKS

2.4(B) add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations

Student Learning Targets:

• I will analyze attributes of two-dimensional shapes and three-dimensional solids and identify their properties
• I will classify two-dimensional shapes and three-dimensional solids by attributes.
• I will compose and decompose two-dimensional shapes.

Essential Questions:

• What attributes are important to identify when creating two- dimensional shapes?
• How can two dimensional shapes and three dimensional solids be classified?
• How can two dimensional shapes and three dimensional solids be sorted?
• What does it mean to compose or decompose a shape?

Extra Information:

Adopted Textbook: Pearson - enVision Math

District Grading Policy

Texas Gateway Online Resource Center