Run the daily sixteen, then discuss one missed item as a class.
The sixteen skills
Daily practice for sharper, fairer thinking.
XiXteen turns critical thinking into a quick daily habit: 16 objective questions across 16 useful reasoning skills, with practice that adapts as your weak spots become clearer.
For everyday thinkers: get better at claims, evidence, numbers, causes, bias, and tradeoffs without needing a textbook nearby.
For teachers: use the daily set as a warm-up, assign skill practice, or compare class discussion around one clear reasoning move at a time.
Today's XiXteen
Leaderboard
Daily Board
For teachers
A ready-made reasoning warm-up.
XiXteen gives students one objective question for each critical-thinking skill, then turns the results into a skill map. It works as a five-minute opener, a weekly practice routine, or a quick way to find which reasoning moves need more class attention.
Choose a skill and level when a lesson needs focused repetition.
Use the skill map to spot patterns before a quiz, discussion, or writing task.
View Skill Map