This carefully selected compilation of exam questions has fully-worked solutions designed for students to go through at home. This can save a lot of valuable time in class.
Click -->https://tes.com/.../Exam Question Practice to download question compilations on 40 other topics.
This particular compilation has some very challenging questions on Algebraic Proof (leading to quadratic equations). They are questions that all Higher students should be practising, but some of them will stretch your very best students :-)
I usually print the questions as an A5 'booklet' and issue them in class or give them out as a homework. I also make them available for a student who wants to do independent study.