I have seen a few different methods for ratio change problems. Some people use scaling (not pictured), I have often in the past preferred...

Here is a small subset, not all, of the examples I recently used for simultaneous equations. My other examples relied heavily on bar...

Once students are able to solve simultaneous equations using both addition and subtraction, this task could be used to isolate the skill...

When teaching pupils how to solve simultaneous equations by elimination pupils have to add, or subtract equations. This could be...