apt4Maths: SIMILARITY PowerPoint for GCSE Maths (Lesson 8 of 10 on Symmetry Transformations Vectors)

PowerPoint Presentation on Similarity (17 slides): Reviews what is meant by ‘similar’; Explains how to find missing lengths on similar shapes, as well as how to find missing areas or volumes of similar 2D or 3D shapes. It has been written by a highly experienced teacher (of 25+ years), senior examiner and reviser for Maths and Stats examinations. It includes:

Lesson objectives
Step-by-step explanations of the subject matter
Examples to aid understanding
Questions to check understanding
Answers to questions, with explanations
Suggestions regarding which topic(s) should be moved on to next.

It is 1 of a set of 10 PowerPoints on 'Symmetry, Transformations and Vectors’ that APT Inititiatives has published for GCSE Maths. The complete set of 10 (149 slides, excluding Title Pages) covers the following topics on ‘Symmetry, Transformations & Vectors’:

01 Line Symmetry (17 slides).
02 Rotational Symmetry (15 slides).
03 3D Symmetry (9 slides).
04 Transformations – Reflections (13 slides).
05 Transformations – Rotations (16 slides).
06 Transformations – Translations (13 slides).
07 Transformations – Enlargements (18 slides).
08 Similarity (17 slides).
09 Proofs of Congruency & Similarity (12 slides).
10 Vectors (19 slides).

These PowerPoints are one of several sets that relate to the ‘Geometry and Measures’ section of the Maths specifications. These other sets concern:

Measures, Perimeter, Area & Volume
Shapes, Angles & Constructions.

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