Australian Curriculum v9.0 · Mathematics · Year 4 · Measurement

AC9M4M04

Estimate and compare angles using angle names including acute, obtuse, straight angle, reflex and revolution, and recognise their relationship to a right angle

Australian Curriculum website

Games that practise AC9M4M04

2D and 3D Shapes

Free shapes game for children. Recognise triangles, squares, rectangles, circles and more. Geometry practice for primary school.

Angle Explorer

Quarter and half turns, right, acute and obtuse angles, degrees, then finding unknown angles on lines and at a point.