Insert checkpoints

Break a long run of steps by adding a stopping point partway through where you test what you have or decide whether to keep going. You add steps rather than reorder them, so errors surface while they are still cheap to fix.

Break a long run of steps by adding a stopping point partway through where you test what you have or decide whether to keep going. You add steps rather than reorder them, so errors surface while they are still cheap to fix.

Example

In the statistics plan, add a five-question self-quiz after each chapter instead of one exam at the end of the unit. In week two you discover conditional probability never landed, while there is still time to reread it.