Knowledge, skills and understanding
Understanding measures
KS2.Ma3.4 – Pupils should be taught to:
KS2.Ma3.4.c – Recognise angles as greater or less than a right angle or half-turn, estimate their size and order them; measure and draw acute, obtuse and right angles to the nearest degree
Samples: Identifying types of lines. Angles in the environment. Comparing angles to a right angle.
Geometric reasoning
ACMMG141 – Investigate, with and without digital technologies, angles on a straight line, angles at a point and vertically opposite angles. Use results to find unknown angles
Samples: Angles on a Straight Line. Identifying angles at intersecting lines. Angles on a Triangle.
Geometric reasoning
ACMMG166 – Demonstrate that the angle sum of a triangle is 180 degrees and use this to find the angle sum of a quadrilateral
Samples: Angles on a Straight Line. Angles on a Triangle. Angles in Quadrilaterals. Angles Problem Solving.
7.GM.4 – Sort two- and three-dimensional shapes into classes, defining properties and justifying the decisions made
Samples: Angles on a Straight Line. Identifying angles at intersecting lines. Parts of a circle.
Mathematics
4.MD.7 – Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
Samples: Angles on a Straight Line. Angles Problem Solving. Angles Problem Solving.