Unit Plan 34 (Grade 2 Math): Geometry Deep Dive—Attributes, Drawing, and Naming

Focus: Produce precise drawings given attributes; classify and justify triangle/quadrilateral distinctions.

Grade Level: 2

Subject Area: Mathematics (Geometry • Mathematical Practices)

Total Unit Duration: 5 sessions (one week), 45–60 minutes per session

I. Introduction

Students use clear attribute language (number of sides, vertices, straight/closed lines) to draw, name, and classify shapes. They compare examples/non-examples, justify decisions, and refine drawings for precision.

Essential Questions

• What attributes make a shape a triangle or a quadrilateral?
• How do I create a precise drawing that matches given attributes?
• How can I justify my classification using math words and evidence?

II. Objectives and Standards

Learning Objectives — Students will be able to:

1. Use shape attributes (number of sides/vertices, straight, closed) to draw and name shapes accurately.
2. Classify shapes as triangles or quadrilaterals and explain why, using examples and non-examples.
3. Follow “attribute riddles” to produce precise drawings and label key features.
4. Justify decisions with clear vocabulary and respond to peer questions (MP.3).
5. Attend to precision (MP.6) in drawings, labels, and explanations.

Standards Alignment — CCSS Grade 2 (focus this week)

• 2.G.1: Recognize and draw shapes having specified attributes (e.g., a given number of angles/vertices); identify triangles, quadrilaterals, pentagons, hexagons, and cubes (focus on triangles/quadrilaterals).
• Mathematical Practices: MP.3 (construct viable arguments & critique reasoning), MP.6 (attend to precision).

Success Criteria — Student Language

• I can draw a shape that matches given attributes.
• I can classify a shape as a triangle or quadrilateral and justify my choice.
• I can use precise words like side, vertex, closed, straight when I explain.