# Properties of Quadrilaterals

Subject: | Mathematics |
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Age of students: | 14-15 years |

Non-digital Technology: | Small and big cards Mini whiteboards |

Functionalities of Technology: | Sending and displaying |

Time needed: | 60-90 minutes |

FaSMEd Partner: | The African Institute for Mathematical Sciences Schools Enrichment Centre |

**Summary:
**This lesson is first about using properties of quadrilaterals to identify particular shapes and second about identifying the smallest number of properties needed to define a shape. After a short introduction, during which the teacher asks students to give the properties of a square, the students work in small groups. They are given strips of small cards; on each strip properties of a given quadrilateral are given. Students sketch the quadrilateral and later determine the smallest number of properties needed to define the quadrilateral. After the activity the teacher holds a class discussion aiming to go over the answers and elicit something about the studentsâ€™ understanding.

**Resources**

- Teacher Guidance (pdf)
- Classroom Resources (pdf)