Objectives:


Support:

  • Recognise reflection symmetry.
  • Recognise where a shape will be after reflection.
  • Recognise where a shape will be after a translation.
  • Calculate angles on a straight line, in a triangle, or around a point.
  • Use a protractor to measure and draw acute and obtuse angles to the nearest degree.
  • Visualise 3-D shapes from 2-D drawings and identify different nets for a closed cube.

Core:

  • Begin to identify and use angle, side and symmetry properties of triangles and quadrilaterals; solve geometrical problems involving these properties, using step-by-step deduction and explaining reasoning with diagrams and text.
  • Explore transformations and symmetries using ICT.
  • Use a ruler and protractor to:
    • construct a triangle given two sides and the included angle (SAS) or two angles and the included side (ASA);
    • explore these constructions using ICT.
  • Use a ruler and protractor to construct simple nets of 3-D shapes, e.g. cuboid, regular tetrahedron, square-based pyramid, triangular prism.

Extension:

  • Solve geometrical problems using side and angle properties of equilateral, isosceles and right-angled triangles and special quadrilaterals.
  • Classify quadrilaterals by their geometric properties.
  • Use straight edge and compasses to construct:
    • the mid-point and perpendicular bisector of a line segment;
    • the bisector of an angle;
    • construct a triangle given three sides (SSS).

Key Vocabulary:


  • SAS, ASA, triangle, quadrilateral, polygon, sketch, construct, adjacent, opposite, parallel, perpendicular, intersect, symmetry, translate, reflect, rotate, congruent.

Suggested Lesson Outcomes:


SUPPORT CORE

Framework:












Teaching & Learning Resources:


Translation Resources
Reflection Resources
Rotation Resources
Enlargement Resources
Ratio Resources
Constructions Resources
Loci Resources