Big Maths CLIC packs are personalised to current learning/targets in maths. They cover and explain methods used. They don't need to be printed, instead you can read the questions from the screen and answer them on paper.
If you are unsure which pack you are working on, check with your teacher. If you are promoted to the next level in class, remember to move on to the next pack.
Remember, little and often is best :)