Same Shapes

The problem challenges and extends students' spatial awareness with 2D shapes. The students are given three different irregular shapes. The goal is to divide each of them into two parts that are exactly the same shape and size.

The Teacher's Notes page offers rationale, suggestions for implementation with a link to Happy Halving (cataloged separately), discussion questions, and ideas for extension and support.

Teachers can print the "printable page" for students. Students could cut out shapes and fold to find the line of symmetry, use grid paper, and/or use geoboards.

Resource ID#: 32725 Type: Teaching Idea

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Open Resource Page

Direct Link: http://nrich.maths.org/990

General Information

Subject(s): Mathematics

Grade Level(s): 4

Intended Audience: Educators

Suggested Technology: Computer for Presenter, Internet Connection

Keywords: line of symmetry, half

Instructional Component Type(s): Teaching Idea

Resource Collection: NSDL

Aligned Standards

This vetted resource aligns to concepts or skills in these benchmarks.

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