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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. Measuring angles using a protractor: Activity 1. Estimating the size of angles.
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 within a circle. Identifying angles at intersecting lines. Naming angles within shapes.
7.GM.4 – Sort two- and three-dimensional shapes into classes, defining properties and justifying the decisions made
Samples: Measuring angles using a protractor: Activity 1. Estimating the size of angles. Angles within a circle.
KS2.Y6.G.PS – Geometry - properties of shapes
Pupils should be taught to:
KS2.Y6.G.PS.5 – Recognise angles where they meet at a point, are on a straight line, or are vertically opposite, and find missing angles
Samples: Angles on a Straight Line. Challenge puzzle - angles. Exterior Angles. Angles Problem Solving. Angles Problem Solving.
KS2.Y5.G.PS – Geometry - properties of shapes
Pupils should be taught to:
KS2.Y5.G.PS.4 – Identify:
KS2.Y5.G.PS.4.b: angles at a point on a straight line and half a turn (total 180°)
Samples: Angles on a Straight Line. Angles Problem Solving. Angles Problem Solving.
