Objectives:


Support:

  • Recognise positions.
  • Recognise properties of rectangles.
  • Classify triangles (isosceles, equilateral, scalene), using criteria such as equal sides, equal angles, lines of symmetry.
  • Read and plot coordinates in the first quadrant.

Core:

  • Use correctly the vocabulary, notation and labelling conventions for lines, angles and shapes.
  • Identify parallel and perpendicular lines; know the sum of angles at a point, on a straight line and in a triangle and recognise vertically opposite angles.
  • Begin to identify and use angle, side and symmetry properties of triangles and quadrilaterals.
  • Use conventions and notation for 2-D coordinates in all four quadrants; find coordinates of points determined by geometric information.
  • Use angle measure; distinguish between and estimate the size of acute, obtuse and reflex angles.

Extension:

  • Identify alternate and corresponding angles; understand a proof that:
    • the sum of the angles of a triangle is 180° and of a quadrilateral is 360°;
    • the exterior angle of a triangle is equal to the sum of the two interior opposite angles.
  • Classify quadrilaterals by their geometric properties.

Key Vocabulary:

  • line segment (parallel, perpendicular, vertical, horizontal, diagonal, opposite, intersection,);
  • angles (vertically opposite, acute, obtuse, reflex, base angles);
  • triangles (equilateral, isosceles, scalene);
  • quadrilateral (square, rectangle, rhombus, parallelogram, kite, arrowhead);
  • grid (x-axis, y-axis, x- & y-coordinates, quadrant).

Suggested Lesson Outcomes:


SUPPORT CORE

Framework:








Teaching & Learning Resources:


Angles Resources
Measuring Angle Resources
Shape Properties Resources
Triangle Resources
Quadrilateral Resources
Angle Rules Resources
Coordinates Resources
Proof Resources