Elementary Mathematics
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  • Elementary
  • Lesson Plan
  • Math
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    Education Standards

    Composing Shapes Lesson Plan

    Composing Shapes Lesson Plan


    Students will learn to compose shapes using 2D shapes.

    Picture from: Pexels by Magda Ehlers


    Students will learn to compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, halfcircles, and quarter-circles) to create a composite shape. Standard 1.G.2a

    This will be face-to-face with the use of computers, This lesson will be over 2 days, 20 minutes each day 1, 25 minutes day 2.


    Picture from: Magda Ehlers


    Background for Teachers


    • To teach this lesson, you will need an understanding that shapes can be used to create other shapes.


    Step 1 - Goals and Outcomes


    Learning Intentions:

    • Students will be able to compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, halfcircles, and quarter-circles) to create a composite shape.

    Success Criteria:

    • Students will make new shapes using 2D shapes


    Step 2 - Planning Instruction


    Student Background Knowledge

    • Prior to this lesson, students will need to have an understanding of the 2D shapes and how they can be rotated and still stay the same shape.

    Strategies for Diverse Learners

    Show pictures or physical shapes. Show the students how they can be turned but they stay the same shape.

    Step 3 - Instruction


    Day 1

    5 min-Teacher show the students the 2D shapes, and goes over each of the shapes names. Students are actively listening.

    5 min-Students practice sorting shapes, teacher walks around and gives feedback. 

    5 min -Teachers shows that you can add two shapes together to make a new shape. (Ex. Triangle and square make a house shape). Students are actively listening.

    5 min-Teacher gives the students their own tangrams with the shape building mats to practice building shapes on their own. Students build their own shapes using the tangrams.


    Day 2

    5 min-Teachers goes over what was learned the day before and shows how you can create new shapes without a mat. Students are actively listening.

    10 min-Teacher explains that they will now try to build shapes without the mats. Students will build shapes without mats.

    10 min-Teacher will then let them get onto their iPads and do "Tangram Game". Students will play the game and create the shapes shown

    Tangram Game



    Step 4 - Assessments


    After students have had ample time to practice composing shapes. Give them the shapes assessment. For this assessment give students a handful of shapes. Then ask them to compose 3 new shapes with them. If they can compose 3 new shapes they pass, if they are unable to provide more practice and reassess in a week.