Key Mathematical Ideas and Learning Outcomes

1. Recognise, classify and describe lines and angles in the environment

• We use and see lines and angles every day in shapes and the world around us

• Mathematicians are not the only people who use lines and angles in their jobs; game developers, sports people, architects, engineers, chefs, bus drivers, builders, clothes designers etc.

2. Relate angles to shape

• We can see lines and angles in all types of shapes

3. Recognise angles in terms of a rotation

• 90⁰ is a quarter rotation, 180⁰ is a half rotation, 360⁰ is a full rotation

• View an angle not only as a static measure but as a measure of turning

• Rotation and angle size are unaffected by the extension of the rays (lines with a fixed endpoint)

4. Estimate, measure and construct angles in degrees

• Rotation and angle size are unaffected by the extension of the rays (lines with a fixed endpoint)

• Vertex is the common endpoints of 2 rays, the angle is located at the vertex

• Use a protractor to construct angles 

Mathematical language of angles, rotations and other related terms such as; angle, ray, vertex, common point, extend, rotate, obtuse, reflex, acute

Skills: communicating, measuring, applying, problem solving, reasoning, implementing, integrating and connecting as well as developing understanding and recalling