Pick the correctly spelt word, or spot the misspelt one hiding in a sentence. Feedback and a memory tip every time.
Spelling questions in the 11+ usually show several similar spellings and ask which is right, or hide one wrong spelling in a sentence. Both reward the same thing: really looking at words rather than guessing from their shape.
Every answer comes with a memory trick. The tricks are the valuable bit: they stick long after the round is over.