An introduction to simultaneous equations using the bar model, and with no scaling up. The questions are from Minimally Different Questions, which is definitely worth exploring.

Linear simultaneous equations starts with visual questions involving burgers and chips, and moves towards the algebraic method. Main task is differentiated and answers are included.

Solving linear simultaneous equations graphically. Make sure students can sketch linear graphs first.

Nonlinear simultaneous equations includes visual examples of solving, as well as algebraic. Main task is differentiated and answers are included.