This is a part of three lessons (sometimes more depending on the group) on simultaneous equations and comes as a bundle at a reduced price.
1. By Elimination Method (add and subtract)
2. By Substitution Method
3. By Graphical Method
This lesson starts off with a quick starter looking at negatives as this is often the main issue with calculations for the elimination method. i.e. when to subtract and when to add. It goes then through a real-life situation and a couple of very clear examples. The PPT also includes full lesson objectives, keywords, questions with answers and a plenary. This lesson is a part of 3 or 4 lessons that I teach on the subject, and maybe with a revision or practice lesson.
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