Physics tutoring

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Across
  1. 2. One who gives one-on-one or small group instruction
  2. 4. Sometimes described as a masochistic field
  3. 7. A guiding head of supplemental instruction
  4. 8. One who leads a group discussion
Down
  1. 1. To help hold one up
  2. 3. Antithesis of having cowardice
  3. 5. More difficult to ask the right one than giving the right answer
  4. 6. Tutors help save these