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His lectures were straightforward, although they tended to be derivation heavy with few practical examples. He provided practice problems for exams that made midterms easy to prepare for. Grading was very fair. Cons: Discussion was unhelpful and HW problems required lots of Excel/Matlab use. ","source_url":"https://www.ratemyprofessors.com/professor/2199950","quality_rating":5,"difficulty_rating":3},{"observed_at":"2026-09-07 16:10:15.336287+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQwMzc4ODI1","source_instructor_id":"rmp:2199950","instructor_name":"Reid Van Lehn","course_label":"CBE311","course_id":"CBE 311","course_uid":"course_b898f7610d29ecf24f516191","review_date":"2024-12-19 06:39:52 +0000 UTC","comment":"Prof. Van Lehn is definitely the BEST professor I've ever had, super smart and also fun. Incredibly clear lectures and explanations, inspirational homework, and fair exams with similar practice problems provided. Taking thermo with Van Lehn = success + actually learning. I really enjoyed his class and hope he can be my professor for all classes!","source_url":"https://www.ratemyprofessors.com/professor/2199950","quality_rating":5,"difficulty_rating":2},{"observed_at":"2026-09-07 16:10:15.336287+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQwMzc4NDE1","source_instructor_id":"rmp:2199950","instructor_name":"Reid Van Lehn","course_label":"CBE311","course_id":"CBE 311","course_uid":"course_b898f7610d29ecf24f516191","review_date":"2024-12-19 06:08:53 +0000 UTC","comment":"He is one of the best professors I've had at UW-Madison and tied with Murphy for best in CBE.\nModern class with tricky HW problems that allow derivation thermodynamic figures and datasets.\nExams are extremely fair. Class is tough. I didn't know thermodynamics could be taught in such a definitive way.","source_url":"https://www.ratemyprofessors.com/professor/2199950","quality_rating":5,"difficulty_rating":5},{"observed_at":"2026-09-07 16:10:15.336287+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTM5NDYwNzIz","source_instructor_id":"rmp:2199950","instructor_name":"Reid Van Lehn","course_label":"CBE311","course_id":"CBE 311","course_uid":"course_b898f7610d29ecf24f516191","review_date":"2024-05-14 17:46:04 +0000 UTC","comment":"Easily one of the best professors in the engineering department. He is extremely well liked by the students despite teaching notoriously difficult subjects. His class is challenging but the work load manageable. 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He seems like he cares about his students' learning very much.","source_url":"https://www.ratemyprofessors.com/professor/2199950","quality_rating":5,"difficulty_rating":4},{"observed_at":"2026-09-07 16:10:15.336287+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTM3ODY0NDE2","source_instructor_id":"rmp:2199950","instructor_name":"Reid Van Lehn","course_label":"CBE311","course_id":"CBE 311","course_uid":"course_b898f7610d29ecf24f516191","review_date":"2023-05-09 00:07:17 +0000 UTC","comment":"Extraordinary professor and person, try to learn as much as possible from him! always oriented when teaching. He's got your back. It is not an easy course at all! at times you may wanna cry, but Van Lehn is your guy. 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