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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.
Mathematics
4.G.1 – Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Samples: Parallel and perpendicular lines in shapes. Identifying types of lines. Identifying angles at intersecting lines.
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.Y4.G.PS – Geometry - properties of shapes
Pupils should be taught to:
KS1.Y4.G.PS.2 – Identify acute and obtuse angles and compare and order angles up to 2 right angles by size
Samples: Measuring angles using a protractor: Activity 1. Estimating the size of angles.
KS2.Y5.G.PS – Geometry - properties of shapes
Pupils should be taught to:
KS2.Y5.G.PS.2 – Know angles are measured in degrees: estimate and compare acute, obtuse and reflex angles
Samples: Identifying angles at intersecting lines. Naming angles within shapes. Naming angles: Activity 1.
