# Shape: exploring angles and nets of 3D objects

This guide provides a sequence of small steps for learning about angles from measuring with a protractor to exploring angles on a straight line and around a point through to finding angles in triangles, special quadrilaterals and regular polygons. Nets of 3D objects are also explored. Note in this resource objects are often referred to as 3D shapes. It is advised to use the terminology 'objects' when talking about 3D and not 3D shapes as suggested in this resources.

Year level(s) Year 6
Audience Teacher
Purpose Teaching resource, Teaching strategies
Teaching strategies and pedagogical approaches Questioning, Explicit teaching
Keywords angles,measure, measure, protractor, regular polygons, problem-solving, explicit teaching

## Curriculum alignment

Curriculum connections Numeracy
Strand and focus Measurement, Number, Build understanding
Topics Angles and geometric reasoning, Algebraic expressions, Addition and subtraction, Length, Using units of measurement
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)