The binding layer

What sets a cycle apart from three tools.

One very simple thing — and it is what makes the difference in practice.

In most setups, each step starts from scratch: you write instructions somewhere, re-enter a marking scheme elsewhere, write a solution a third time. Here, the marking scheme is born with the exercise, marking applies it without you having to re-upload anything, and the teaching notes draw on the solution you have already approved. You enter each thing only once — and at every step, you have the final say before anything goes further.