My thanks to an earlier contributor for the core idea. An activity to allow students in KS3 & 4 to test their substitution skills. Each substitution gives a numerical answer, which is then translated into a letter using the code grid. 4 sets of substitutions proivde clues to the identity of a famous person.

<p>Starter activity for basic algebraic equations</p>

<p>Starter activity solving simultaneous equations in a real life situation</p>