MathsBox Warmups, what a superb idea! These warmups are definitely something that will keep students engaged and on their toes. I have looked at the higher GCSE warmups and I am sure that my students will enjoy doing them. It will certainly give them a quick challenge for the start of the lesson. Excellent resource, thanks MathsBox! All I had to do was register for free to get access to all of the resources on this promising website.