SALTA 3rd grade

Focus

Standards

Curriculum Supports – enVision 2020

Vocabulary

3.G.1 3.G.2

Strand: Geometry

Topic 15: Attributes of Two-Dimensional Shapes

Topic 15:

Third grade students will reason with shapes and their attributes.

Pick A Project: Diamonds and Squares, Time Size, Quadrilaterals in Everyday Life

• polygon • side • quadrilateral

Standard 3.G.1 Understand that shapes in different categories (for example, rhombuses, rectangles, and others) may share attributes (for example, having four sides) , and that the shared attributes can define a larger category (for example, quadrilaterals) . Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories. Standard 3.G.2 Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into four parts with equal area, and describe the area of each part as 1/4 of the area of the shape.

15-1 Describe Quadrilaterals 15-2 Classify Shapes 15-3 Analyze and Compare Quadrilaterals 3-ACT Math: Square It Up

• angles • vertex • trapezoid

• parallel sides • parallelogram • rectangle • right angle • rhombus

15-4 Math Practices and Problem Solving: Precision

• square • convex • concave

Topic 15: Manipulatives • Pattern Blocks

Assessment Options: Topic 15 Assessment – Attributes of Two-Dimensional Shapes (print or online) Topic 15 Performance Assessment – Attributes of Two-Dimensional Shapes Team Created Assessment

Assessment Tasks – Topic 15

Procedural Check

Application Task

3.G.1

Use the following terms to label each shape. Rectangle, trapezoid, rhombus, square. (DOK 1)

Create a picture book that you could use to teach a friend the difference between a rhombus, rectangle, square, and a trapezoid.

(DOK 3)

Use your understanding of quadrilaterals to identify which of the shapes shown below are quadrilaterals. Use words and labels to explain your choices. (DOK 3)