Crack The Safe - Inequalities

Three “Crack The Safe” activities on inequalities: on each on using a number line/integers that satisfy, solving and regions. These are designed for students to be able to self-check what they are doing as there are answer options available to them meaning that if their answer isn’t an option they have to go back and check. They also lead to nice discussions about how the incorrect answers were achieved, but ultimately these allow the teacher help those who require it whilst the others get on with some practice. I tend to use these as starters or plenaries but do use them as part of a main task.