'Reveals' give learners the opportunity to reveal the correct answer for questions they have answered incorrectly. Normally in CENTURY, learners are not told the correct answer if they get a question wrong, this is to encourage them to return to the learning materials to embed knowledge.
Learners may use three reveals per hour. The number above your avatar shows how many you have left for that hour. They will be refreshed the following hour.
When learners get a question incorrect it will ask if they want to reveal the correct answer.
If they click the correct answer button they will get a prompt to remind them that they are using one of their reveals. If they choose unlock, voila! they will see the correct answer.