In Missions, all the questions are grouped in 3's on the students side.
Students get 1 star for the first correct answer, a 2nd star for the second correct answer but can only get all 3 stars if they can get all 3 questions correct in a row. To get all 3 correct answers in a row is considered a completion of the "Mastery Challenge!" and 3 yellow stars will be given for that set of three questions.
Students can attempt 3-star activities multiple times and get all three questions correct without earning the "Mastery Challenge!". In this situation they will have a Blue third star.
Note to teachers: Though stars are a proxy for correct answers they are not a direct correlation and therefore are not used for your reporting. On the teacher side only correct or incorrect answers are reported.
Points are awarded for a number of activities including attempting a question, uploading a solution, and getting a question correct.
Points build up over time and move students through the various "League Levels" of Knowledgehook.
Badges are awarded to students as they progress through a strand of Knowledgehook created questions (custom questions do not unlock badges). As teachers assign Missions more of the strand is completed and badges begin to get unlocked. Students can view a summary of their badges in their Profile.
When a teacher assigns a Mission from Knowledgehook created questions, the entire strand related to those questions is made available to the student. Students are able to do more questions for that strand and see their progress towards earning the badge for that strand.
In the image below (seen from the Student side) the Mission includes 6 questions assigned by the teacher from the strand "Scatter Plots and Trends". If the student clicks on "Scatter Plots and Trends" they will see all the questions related to that strand and be able to complete them unlocking larger and better badges.
The Mathalon is available in Premium Knowledgehook and, like a Marathon, is all about completion. As students earn stars they move towards completing the Mathalon.