Help your 3rd grade students build a deep understanding of 2D shapes, area, and perimeter with this comprehensive Geometry & Area & Perimeter Measurement unit bundle. This complete 3rd grade math unit includes 17 scaffolded lessons covering classifying shapes, understanding attributes, exploring quadrilaterals, finding area, and solving perimeter and area problem solving tasks. Designed for introduction, guided practice, review, and problem solving, these scaffolded lessons work seamlessly for whole-group instruction, interactive practice, sub plans, supplemental practice, review lessons, and print or digital classrooms.

Teaching geometry and area & perimeter concepts can be challenging because students must connect multiple skills: identifying shape attributes, understanding relationships between shapes, measuring area, calculating perimeter, and solving real-world problems. This bundle provides clear instruction, guided practice, and structured independent work so students build confidence step-by-step across the entire unit.

Teachers will love that everything is fully editable, making it easy to adapt pacing, examples, or activities to meet your classroom’s needs, whether you teach paperless, print-based, or a mix of both.

What’s Included:

This complete Geometry: Area & Perimeter Unit includes both teaching and student materials for all 17 lessons (full breakdown of topics below). Each lesson includes: 

• Printable lesson plan with pacing, prompts, and instructional notes
• Editable Google Slides presentation for instruction (includes speaker notes aligned to the lesson plan)
• Interactive guided practice slides for students to follow along
• Printable guided practice version for print-based classrooms
• Independent practice worksheet (perfect for homework or extra in-class practice)
• Exit ticket and reflection prompts
• Answer keys for all student practice

Plus, grab the unit bundle and get two bundle exclusive bonuses: 

• Pacing guide
• End of unit assessment

Lessons Included

2D Shapes

Angles in Shapes

Identifying & Classifying Quadrilaterals

Relationships Between Quadrilaterals

Area as Equal Units

Area Using Arrays

Comparing Area

Area of Rectangles

Area: Missing Side Length

Area Word Problems

Decomposing Area

Understanding Perimeter

Perimeter in Real-World Problems

Area vs. Perimeter

Area & Perimeter Relationships

Area & Perimeter Problem Solving

Reasoning About Area & Perimeter

How to Use It:

Teach this Geometry: Area & Perimeter unit sequentially or incorporate individual lessons into your existing curriculum. The lessons gradually build understanding from foundational skills to more complex problem solving.

Because the resource is fully editable, you can:

• Choose digital, print, or hybrid formats
• Adjust examples or pacing
• Use it for whole group, small group, or reteaching
• Assign practice as classwork or homework

Save planning time and teach the entire Geometry: Area & Perimeter unit with confidence. This complete bundle provides the structure, practice, and flexibility your students need to master these essential math skills.

Download this ready-to-teach 3rd grade math unit and simplify your planning while strengthening your students’ understanding of shapes, area, and perimeter!

Check out the entire collection of done-for-you 3rd grade math lesson plans here → 3rd Grade Lesson Plans