Glossary of Khan Academy terms

Avatars: Khan Academy characters that students use to customize their profiles; students choose their favorite avatar and earn energy points to unlock more avatar options.
Badges: incentives used to encourage students for mastery and practice, completion of missions, as well as for participating positively in the Khan Academy community. Check out all the cool badges here.
Class Code: found in Coach Reports, found on the Dashboard and Manage Students tabs of Coach Reports; a unique code generated automatically when each class is created; students may simply add themselves to a class using the class code.
Coach: teacher, parent, or any person who uses Khan Academy to help, support, and monitor the progress of students who have accepted them as their coach.
Coach Reports: the central hub (or dashboard) where a teacher or coach can manage their class rosters, make skills recommendations for students, and monitor student progress: coach reports lets a teacher see where students are spending their time, where they are struggling, and where they are excelling - want to learn more about Coach Reports? Check out these helpful instructions.
Energy Points:  a measure of effort on Khan Academy; points are awarded for various learning activities like practicing exercises, watching a video, or creating a CS program, as well as for exhibiting positive character strengths like asking and answering questions in the Khan Academy community (for students 13 years, and older).
Exercises:  100,000+ Common Core-aligned exercises to practice grammar and mathematics from early math through calculus, and more.
Manage Class: found in Coach Reports, where a teacher or coach adds makes changes to the class roster.
Mastery Challenges: a set of challenge questions that pull from various skills, requiring a student to demonstrate mastery of a skill after a period of rest from practicing the skill, in order to truly demonstrate mastery; taking Mastery Challenges is the only way for students to achieve the “Mastered” status level for each math skill.
Mastery Levels: struggling, needs practice, practiced, level one, level two, mastered.
Mastery System: the educational philosophy that Khan Academy follows in which students proceed to the next topic not in accordance with a fixed calendar, but only after they have completely mastered the necessary prerequisites.
Missions: some of Khan Academy’s grade levels and classes (e.g. 3rd Grade and Geometry) have associated math “missions” that allow students to learn at their own pace and require the mastery of skills before students may move on to the next higher order skill, all while earning energy points and badges as they master skills and complete missions.
Mission Warm-Up: a few questions at the beginning of each mission that helps Khan Academy figure out where to start students on the mission.
Profile: where a student goes to take pride in viewing all of their progress on Khan Academy! Provides a dashboard of: mission progress, points, badges, CS programs, community participation (for students 13 years, and older) and more.  Students also find their teacher or coach recommendations here.
Recommendations: mechanism for teachers and coaches to assign skills to a student or group of students.
Skill Progress: found in Coach Reports, a report that provides insight into each student’s mastery level on each skill, helping teachers and coaches identify which students need additional support.
Streak: we like to reward persistence!  Khan Academy rewards students with points for a streak of questions answered correctly, and continuous days of work.
Student Progress: found in Coach Reports, provides a report outlining a quick summary of each class as a whole, as well as the progress of each individual student.
Videos: Khan Academy has 13,000+ instructional videos, including 5000 math videos tightly aligned with the Common Core, covering early math to calculus and more.