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
ACMMG112 – Estimate, measure and compare angles using degrees. Construct angles using a protractor
Samples: Measuring angles using a protractor: Activity 1. Measure and name 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 on a Straight Line. Identifying angles at intersecting lines. Angles on a Triangle.
6.GM.3 – Sort two- and three-dimensional shapes (including prisms), considering given properties simultaneously and justifying the decisions made
Samples: Measure and name angles. Identifying angles at intersecting lines. Constructing 2D shapes.
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.6 – Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
Samples: Measure and name angles. Identifying angles at intersecting lines. Using a protractor to measure angles.
4.MD.5 – Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:
4.MD.5.a – An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles.
Samples: Identifying angles at intersecting lines. Naming angles: Activity 1. Naming angles: Activity 2. Types 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: Comparing angles to a right angle. Angles on a Straight Line. Identifying angles at intersecting lines.
Mathematics
5.G.3 – Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Samples: Identifying angles at intersecting lines. Measuring angles using a protractor: Activity 1.
5.G.4 – Classify two-dimensional figures in a hierarchy based on properties.
Samples: Measuring angles using a protractor: Activity 1. Identifying angles at intersecting lines.