Things I learned from teaching

Original Article ↗ Hacker News Discussion ↗

Teachers, students, and academics trade experiences on why effective teaching is so hard to get right, from misaligned incentives in universities (where research is rewarded more than teaching) to high schools that prioritize attendance and compliance over genuine preparation for college. Commenters emphasize that learning requires productive struggle, clear motivation (“why this matters”), and environments where students feel safe admitting confusion, but note that large ability gaps, mandatory attendance, and student evaluation pressures often push instructors toward spoon‑feeding and lowest‑common‑denominator courses. Several contributions highlight practical strategies—interactive labs, peer review of code, storytelling, and flipped or partially flipped classrooms—while others argue that systemic issues in how education is funded, measured, and staffed limit how far individual teachers can go.

Readiness for University

  • Many argue 18–24 is often too early to benefit fully from rigorous math/CS/physics; real‑world work in between can dramatically increase motivation and comprehension.
  • Others say age is less important than maturity and life experience, which schooling often delays.
  • Strong sense that high school poorly prepares students for university: classes too easy, weak study habits, teachers exhausted and acting as babysitters.

Student Motivation, Struggle, and “Flow”

  • Broad agreement that some struggle is essential for learning; debate over wording (“struggle” vs “hard work/toil”).
  • One camp: removing struggle is bad teaching; students must push through difficulty to grow.
  • Other camp: excessive struggle signals poor instruction; teachers should pre‑experience confusion and guide students through it.
  • Ideal is “flow”: tasks neither too easy nor too hard, like good video game difficulty curves.

Teaching Methods: Lectures, Flipped, and Interactive

  • Flipped classrooms get mixed reviews: some report success with short videos + in‑class problem solving; others say they’re overhyped, fragile, and time‑intensive to design.
  • Interactive labs can work even without TAs if class sizes are small and worksheets are well‑scaffolded.
  • Recorded lectures are valued by some students (rewatch at speed, pause, catch up) but criticized as “soulless” or as encouraging passivity.

Institutional Constraints and Incentives

  • Exams often reward guessing what the professor wants rather than broad understanding; quality varies by instructor.
  • Student evals can punish demanding courses and push instructors toward spoon‑feeding.
  • Forced attendance (K–12 and some universities) is seen by some as necessary for disadvantaged students, by others as counterproductive when students don’t care.
  • Strong consensus that academia, especially research‑focused universities, rewards publications far more than good teaching.

Practical Classroom Strategies

  • Common advice: teach to the middle, but offer enrichment for advanced students and scaffolds for weaker ones.
  • Emphasize the “why” of material and real‑world relevance to spark curiosity.
  • Use personal enthusiasm, storytelling, and short in‑class tasks to keep attention.
  • Peer interaction (students assessing each other’s code or work) can motivate and deepen understanding, but turning top students into quasi‑TAs is controversial.

What Teachers Learn by Teaching

  • Teaching exposes hidden steps in one’s own reasoning and forces better organization of knowledge.
  • Reading the room and adapting on the fly is described as one of the most important and hardest skills.
  • Many note the emotional weight of teaching, especially in under‑resourced environments, and the limits of what good pedagogy can fix without broader systemic change.