Your purchase comes with the document pictured above. The document encourages kids to choose their own problems, allowing more freedom. I posted the solutions, along with the work, so kids can check their own problems and find their own mistakes. Scholars are expected to be flexible when representing their answers, come circles have the radius labeled, some have the diameter, some problems require them to keep pi as a constant, and some problems require the use of 3.14 instead. This is great if you have a a class that benefits from movement breaks, and also builds the skill of error-checking.
You may choose any problems you want, in any order you want. You should choose the figures you need practice on first, the only way to get better at a skill is to practice! The solutions to the problems are posted around the room; when you have found the area and circumference of the figure check your answer on the wall and make corrections if necessary.