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reSolve: Spatial Reasoning: Right Angles

In this sequence of two lessons, students create and identify right angles. In the first lesson, students use popsicle sticks to create right angles and investigate how many right angles can be created for a given number of sticks. Students then go on to create eight-sided polygons with different combinations of internal right angles. Each lesson is outlined in detail including curriculum links, vocabulary, materials needed, sample answers, discussion points and student resources. This sequence is part of the reSolve: Mathematics by Inquiry program.

Additional details
Year level(s)	Year 6
Audience	Teacher
Purpose	Teaching resource
Format	Downloadable resources
Teaching strategies and pedagogical approaches	Mathematics investigation
Keywords	right angles, angles, shapes, polygons
Curriculum alignment
Curriculum connections	Numeracy
Strand and focus	Build understanding, Apply understanding, Space
Topics	Angles and geometric reasoning
AC: Mathematics (V9.0) content descriptions	AC9M6M04 Identify the relationships between angles on a straight line, angles at a point and vertically opposite angles; use these to determine unknown angles, communicating reasoning
Numeracy progression	Understanding geometric properties (P5) Understanding units of measurement (P8)
Copyright details
Organisation	reSolve Maths by Inquiry
Copyright	© Australian Government Department of Education, Skills and Employment 2021. Creative Commons BY-NC-SA 4.0.