# TONGHAI YANG — Courses & Reviews | UW–Madison [View on UW Courses](https://uwcourses.com/instructors/TONGHAI_YANG--instructor_91a8295117bb0ce7b172a161) ## Dataset ### search projection #### version 1 #### terms * 1272 * 1264 * 1262 * 1254 * 1252 * 1244 * 1242 * 1234 * 1232 * 1224 * 1222 * 1212 * 1204 * 1202 * 1194 * 1192 * 1184 * 1182 * 1174 * 1172 * 1164 * 1162 * 1154 * 1152 * 1144 * 1142 * 1134 * 1132 * 1124 * 1122 * 1114 * 1112 * 1104 * 1102 * 1094 * 1092 * 1084 * 1082 * 1074 * 1072 ### revision e243353dcb7d79b7247ced91d69443ef4c2a6349 ### repository twangodev/uwcourses ### schema version 6 ### importer version 8 ### projection id 7eb94c60c31fe3d8ae732986b7f3d069e1345ae92fd6239119e63b9d2461969d ### observed at 2026-09-07T15:55:43.033547+00:00 ### built at 2026-10-01T19:10:41.241229+00:00 ### courses 8951 ### current instructors 5754 ### limited false ### terms * 1272 * 1264 * 1262 * 1254 * 1252 * 1244 * 1242 * 1234 * 1232 * 1224 * 1222 * 1212 * 1204 * 1202 * 1194 * 1192 * 1184 * 1182 * 1174 * 1172 * 1164 * 1162 * 1154 * 1152 * 1144 * 1142 * 1134 * 1132 * 1124 * 1122 * 1114 * 1112 * 1104 * 1102 * 1094 * 1092 * 1084 * 1082 * 1074 * 1072 ### term 1272 ### departments | subject | count | | --------- | ----- | | AAE | 90 | | ABT | 20 | | ACCTIS | 36 | | ACTSCI | 14 | | AFAERO | 10 | | AFRICAN | 87 | | AFROAMER | 71 | | AGROECOL | 21 | | AMERIND | 53 | | ANAT\&PHY | 7 | | ANATOMY | 2 | | ANESTHES | 8 | | ANSCI | 57 | | ANTHRO | 95 | | ART | 125 | | ARTED | 10 | | ARTHIST | 121 | | ASIALANG | 129 | | ASIAN | 109 | | ASIANAM | 28 | | ASTRON | 38 | | ATMOCN | 69 | | BIOCHEM | 51 | | BIOCORE | 10 | | BIOLOGY | 14 | | BIOMDSCI | 18 | | BME | 66 | | BMI | 41 | | BMOLCHEM | 10 | | BOTANY | 69 | | BSE | 44 | | C\&ESOC | 73 | | CBE | 48 | | CHEM | 101 | | CHICLA | 52 | | CIVENGR | 133 | | CLASSICS | 47 | | CNP | 10 | | CNSRSCI | 50 | | COMARTS | 137 | | COMPBIO | 15 | | COMPLIT | 11 | | COMPSCI | 138 | | COUNPSY | 78 | | CRB | 19 | | CS\&D | 71 | | CSCS | 40 | | CURRIC | 193 | | DANCE | 93 | | DERM | 8 | | DS | 88 | | DYSCI | 35 | | ECE | 155 | | ECON | 145 | | EDPOL | 114 | | EDPSYCH | 97 | | ELPA | 70 | | EMA | 53 | | EMERMED | 17 | | ENGL | 206 | | ENTOM | 40 | | ENVIRST | 148 | | EP | 15 | | EPD | 67 | | ESL | 16 | | F\&WECOL | 60 | | FAMMED | 22 | | FINANCE | 50 | | FOLKLORE | 40 | | FOODSCI | 43 | | FRENCH | 63 | | GEN\&WS | 145 | | GENBUS | 72 | | GENECSLR | 17 | | GENETICS | 60 | | GEOG | 113 | | GEOSCI | 83 | | GERMAN | 82 | | GLE | 48 | | GNS | 38 | | GREEK | 27 | | HDFS | 41 | | HEBR-BIB | 13 | | HEBR-MOD | 10 | | HISTORY | 233 | | HISTSCI | 56 | | HONCOL | 13 | | ILS | 43 | | INFOSYS | 9 | | INTEGART | 7 | | INTEGSCI | 22 | | INTER-AG | 18 | | INTER-HE | 11 | | INTER-LS | 22 | | INTEREGR | 16 | | INTLBUS | 21 | | INTLST | 50 | | ISYE | 83 | | ITALIAN | 53 | | JEWISH | 56 | | JOURN | 88 | | KINES | 128 | | LACIS | 26 | | LANDARC | 61 | | LATIN | 24 | | LAW | 120 | | LEGALST | 48 | | LINGUIS | 35 | | LIS | 89 | | LITTRANS | 78 | | LSC | 52 | | M\&ENVTOX | 7 | | MARKETNG | 62 | | MATH | 153 | | MDGENET | 8 | | ME | 130 | | MEDHIST | 43 | | MEDICINE | 60 | | MEDIEVAL | 32 | | MEDPHYS | 39 | | MEDSC-M | 29 | | MEDSC-V | 41 | | MHR | 68 | | MICROBIO | 45 | | MILSCI | 16 | | MM\&I | 22 | | MOLBIOL | 6 | | MS\&E | 59 | | MUSIC | 165 | | MUSPERF | 126 | | NAVSCI | 20 | | NE | 44 | | NEURODPT | 11 | | NEUROL | 7 | | NEURSURG | 4 | | NTP | 11 | | NURSING | 111 | | NUTRSCI | 65 | | OBS\&GYN | 18 | | OCCTHER | 39 | | ONCOLOGY | 14 | | OPHTHALM | 5 | | OTM | 43 | | PATH | 34 | | PATH-BIO | 29 | | PEDIAT | 26 | | PHARMACY | 31 | | PHILOS | 77 | | PHMCOL-M | 11 | | PHMPRAC | 45 | | PHMSCI | 60 | | PHYASST | 37 | | PHYSICS | 88 | | PHYSIOL | 3 | | PHYTHER | 37 | | PLANTSCI | 52 | | PLPATH | 35 | | POLISCI | 192 | | POPHLTH | 58 | | PORTUG | 33 | | PSYCH | 101 | | PSYCHIAT | 22 | | PUBAFFR | 54 | | PUBLHLTH | 23 | | RADIOL | 11 | | REALEST | 41 | | RELIGST | 90 | | RHABMED | 9 | | RMI | 24 | | RP\&SE | 102 | | S\&APHM | 17 | | SCANDST | 73 | | SLAVIC | 89 | | SOC | 149 | | SOCWORK | 87 | | SOILSCI | 46 | | SPANISH | 83 | | SRMED | 21 | | STAT | 94 | | STDYABRD | 52 | | STS | 8 | | SURGERY | 25 | | SURGSCI | 33 | | THEATRE | 91 | | URBRPL | 60 | | UROLOGY | 5 | | ZOOLOGY | 89 | ### designations None recorded. ## instructor ### instructor uid instructor\_91a8295117bb0ce7b172a161 ### source madgrades ### source instructor id 3230527 ### identity basis source\_id ### identity status source\_identified ### name TONGHAI YANG ### first observed at 2026-09-06 23:14:58.172943+00:00 ### last observed at 2026-09-07 15:55:43.033547+00:00 ### ratings #### review count 45 #### quality 3.02 #### difficulty 3.04 #### quality count 45 #### difficulty count 45 #### profile id rmp:2043547 #### source url #### match basis exact\_name #### observed at 2026-09-07 16:01:22.516210+00:00 #### courses ##### course 60c2767a206a079d3af2a1a4 ###### review count 3 ###### quality 1.33 ###### difficulty 4.67 ###### quality count 3 ###### difficulty count 3 ##### course cc1de60e9953cdd9c469e9a5 ###### review count 36 ###### quality 3.06 ###### difficulty 2.94 ###### quality count 36 ###### difficulty count 36 ##### course fa53f4954bab469b5d4c4fe3 ###### review count 2 ###### quality 3.5 ###### difficulty 3.5 ###### quality count 2 ###### difficulty count 2 #### bayesian quality 3.216826394937414 #### prior mean 3.6596857835465957 #### prior weight 20 ### grade statistics #### gpa 3.248 #### graded 2472 #### counts * 1217 * 198 * 495 * 118 * 292 * 103 * 49 #### sections 63 ### current false ### courses None recorded. ### revision e243353dcb7d79b7247ced91d69443ef4c2a6349 ### instructor url /instructors/TONGHAI\_YANG--instructor\_91a8295117bb0ce7b172a161 ## history | term | course\_uid | course\_id | title | | ---- | -------------------------------- | --------------------- | --------------------------------------------- | | 1264 | course\_b29e90ca7f22f0d138916bb0 | MATH 698 | DIRECTED STUDY | | 1264 | course\_1fabbb671b1f7edbb84c3621 | MATH 844 | ARITHMETIC GEOMETRY | | 1264 | course\_4caf2a688d661c1e9163b007 | MATH 967 | SEMINAR IN NUMBER THEORY | | 1264 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1262 | course\_60c2767a206a079d3af2a1a4 | MATH 542 | MODERN ALGEBRA 2 | | 1262 | course\_b29e90ca7f22f0d138916bb0 | MATH 698 | DIRECTED STUDY | | 1262 | course\_4caf2a688d661c1e9163b007 | MATH 967 | SEMINAR IN NUMBER THEORY | | 1262 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1254 | course\_b29e90ca7f22f0d138916bb0 | MATH 698 | DIRECTED STUDY | | 1254 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1252 | course\_eceba8534cefe7b6309329a9 | MATH 748 | ALGEBRAIC NUMBER THEORY | | 1244 | course\_cc1de60e9953cdd9c469e9a5 | MATH 221 | CALCULUS AND ANALYTIC GEOMETRY 1 | | 1244 | course\_b29e90ca7f22f0d138916bb0 | MATH 698 | DIRECTED STUDY | | 1244 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1242 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1234 | course\_dc3b8c6a00e91bb2d66da1ba | MATH 699 | DIRECTED STUDY | | 1234 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1232 | course\_72733c94bb8725b969d3e958 | MATH 741 | ABSTRACT ALGEBRA | | 1232 | course\_37418528c8b208b186458d37 | MATH 849 | AUTOMORPHIC FORMS | | 1224 | course\_1fabbb671b1f7edbb84c3621 | MATH 844 | ARITHMETIC GEOMETRY | | 1204 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1182 | course\_cc1de60e9953cdd9c469e9a5 | MATH 221 | CALCULUS AND ANALYTIC GEOMETRY 1 | | 1174 | course\_63c43e7ac8225e2773df74d8 | COMPSCI/MATH/STAT 475 | INTRODUCTION TO COMBINATORICS | | 1172 | course\_b2cc5d7ed9882287cd8e7c03 | MATH 848 | ADVANCED TOPICS IN NUMBER THEORY | | 1164 | course\_1fabbb671b1f7edbb84c3621 | MATH 844 | ARITHMETIC GEOMETRY | | 1162 | course\_cc1de60e9953cdd9c469e9a5 | MATH 221 | CALCULUS AND ANALYTIC GEOMETRY 1 | | 1162 | course\_fa53f4954bab469b5d4c4fe3 | MATH 341 | LINEAR ALGEBRA | | 1154 | course\_fa53f4954bab469b5d4c4fe3 | MATH 341 | LINEAR ALGEBRA | | 1154 | course\_2f67171e98d0175542979e4a | MATH 845 | CLASS FIELD THEORY | | 1152 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1152 | course\_dcdb624e3fb8cbaf9a557ab9 | MATH/STAT 431 | INTRODUCTION TO THE THEORY OF PROBABILITY | | 1134 | course\_63c43e7ac8225e2773df74d8 | COMPSCI/MATH/STAT 475 | INTRODUCTION TO COMBINATORICS | | 1134 | course\_8634dde81cc95f6c58014087 | MATH 234 | CALCULUS--FUNCTIONS OF SEVERAL VARIABLES | | 1132 | course\_b1eafcac9ab8ac7e38473452 | MATH 847 | TOPICS IN ALGEBRA | | 1124 | course\_63c43e7ac8225e2773df74d8 | COMPSCI/MATH/STAT 475 | INTRODUCTION TO COMBINATORICS | | 1124 | course\_dc3b8c6a00e91bb2d66da1ba | MATH 699 | DIRECTED STUDY | | 1124 | course\_1fabbb671b1f7edbb84c3621 | MATH 844 | ARITHMETIC GEOMETRY | | 1122 | course\_fa53f4954bab469b5d4c4fe3 | MATH 341 | LINEAR ALGEBRA | | 1114 | course\_63c43e7ac8225e2773df74d8 | COMPSCI/MATH/STAT 475 | INTRODUCTION TO COMBINATORICS | | 1114 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1114 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1112 | course\_eceba8534cefe7b6309329a9 | MATH 748 | ALGEBRAIC NUMBER THEORY | | 1112 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1112 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | | 1104 | course\_1f8e8903c7761a5fe852a4bc | MATH 319 | TECHNIQUES IN ORDINARY DIFFERENTIAL EQUATIONS | | 1104 | course\_dc3b8c6a00e91bb2d66da1ba | MATH 699 | DIRECTED STUDY | | 1104 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1102 | course\_8634dde81cc95f6c58014087 | MATH 234 | CALCULUS--FUNCTIONS OF SEVERAL VARIABLES | | 1102 | course\_b1eafcac9ab8ac7e38473452 | MATH 847 | TOPICS IN ALGEBRA | | 1102 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1094 | course\_6bc496e4640fd08f71e1b041 | MATH 222 | CALCULUS AND ANALYTIC GEOMETRY 2 | | 1094 | course\_7e12e6bf6be7a81f7ca74420 | MATH 541 | MODERN ALGEBRA 1 | | 1094 | course\_dc3b8c6a00e91bb2d66da1ba | MATH 699 | DIRECTED STUDY | | 1094 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1092 | course\_7e12e6bf6be7a81f7ca74420 | MATH 541 | MODERN ALGEBRA 1 | | 1092 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1084 | course\_7e12e6bf6be7a81f7ca74420 | MATH 541 | MODERN ALGEBRA 1 | | 1084 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1082 | course\_f32e1ae7afb72f8b801acebb | MATH 749 | ANALYTIC NUMBER THEORY | | 1082 | course\_931174a7bfe76a686e659726 | MATH 941 | SEMINAR-ALGEBRA | | 1072 | course\_01a16b5311010cfe0f48754c | MATH 990 | READING AND RESEARCH | ## timeline | term | courses | | ---- | ------- | | 1072 | 1 | | 1082 | 2 | | 1084 | 2 | | 1092 | 2 | | 1094 | 4 | | 1102 | 3 | | 1104 | 3 | | 1112 | 3 | | 1114 | 3 | | 1122 | 1 | | 1124 | 3 | | 1132 | 1 | | 1134 | 2 | | 1152 | 2 | | 1154 | 2 | | 1162 | 2 | | 1164 | 1 | | 1172 | 1 | | 1174 | 1 | | 1182 | 1 | | 1204 | 1 | | 1224 | 1 | | 1232 | 2 | | 1234 | 2 | | 1242 | 1 | | 1244 | 3 | | 1252 | 1 | | 1254 | 2 | | 1262 | 4 | | 1264 | 4 | ## term 1272 ## courses None recorded. ## reviews ### items ```json [ { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTQyMjU2ODAz", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "math542", "course_id": "MATH 542", "course_uid": "course_60c2767a206a079d3af2a1a4", "review_date": "2025-12-15 07:54:49 +0000 UTC", "comment": "The average of the midterm rise from 64 to 71 at the end of the semester. Even given the fact that a lot a lot of Students quit after the midterm, there is no curve on the grades. The workload is way more than 3 credits. ", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 1, "difficulty_rating": 5 }, { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTQyMjU2NTg5", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "math542", "course_id": "MATH 542", "course_uid": "course_60c2767a206a079d3af2a1a4", "review_date": "2025-12-15 07:23:03 +0000 UTC", "comment": "His lectures are awful. No lecture notes, not organized at all. He leaves a lot of homework and seldom provides the solutions in time.The exam scope he gives is very unclear, with almost everything taught and hundred of problems.He is a very tough grader and nearly 1/3 students in his class flee after the midterm. Avoid him at all costs.", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 1, "difficulty_rating": 4 }, { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTQyMjM5ODM0", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "math542", "course_id": "MATH 542", "course_uid": "course_60c2767a206a079d3af2a1a4", "review_date": "2025-12-15 07:22:23 +0000 UTC", "comment": "Prof Yang is nice. Nothing against him personally.\n\nContent: 400 pages of Dummit & Foote from Ring (p. 222) to Galois (p. 640), including difficult topics like Module Theory.\n\nWorkload: 12 weeks of homework with no lecture notes and selected solutions.\n\nDifficulty: Exam averages were low (71.55 and 77.14), yet a 90 overall is required for an A.", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 2, "difficulty_rating": 5 }, { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTM5NTAwNDE3", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "CALC221", "course_id": null, "course_uid": null, "review_date": "2024-05-21 03:01:06 +0000 UTC", "comment": "Funny professor who wants his students to succeed. You get used to his accent, and it's not too bad. Lectures can be quick, but if you read the assigned weekly readings and attend discussion sessions, you'll be fine. Don't need HS calc to do well but do spend some time with the course precalc review. Just be ready to spend time practicing!!", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 4, "difficulty_rating": 2 }, { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTM5NDgzOTEy", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "MATH221", "course_id": "MATH 221", "course_uid": "course_cc1de60e9953cdd9c469e9a5", "review_date": "2024-05-17 14:57:33 +0000 UTC", "comment": "Very nice person who clearly knows a lot about math but has absolutely no idea how to explain it. Just talks about mathematical things he thinks is cool instead of teaching the exam material, and has no problem with exam averages consistently being in the low 70's. Projector or computer breaks at least once a lecture as well.", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 2, "difficulty_rating": 3 }, { "observed_at": "2026-09-07 16:01:22.516210+00:00", "run_id": "20260907T155543-ce3781c4", "source_review_id": "UmF0aW5nLTM5Mjk4MTAw", "source_instructor_id": "rmp:2043547", "instructor_name": "Tonghai Yang", "course_label": "MATH221", "course_id": "MATH 221", "course_uid": "course_cc1de60e9953cdd9c469e9a5", "review_date": "2024-04-29 15:21:34 +0000 UTC", "comment": "Very nice, funny guy. Caring as well. As a professor, absolutely not. I have never taken calc, and the way he taught it was like a foreign language. He wrote very fast in lecturers, yet you cant understand his writing. He has a thick accent, and he makes mistakes in lectures all the time. I stopped going cause it was a waste of my time. Dropped it.", "source_url": "https://www.ratemyprofessors.com/professor/2043547", "quality_rating": 1, "difficulty_rating": 5 } ] ``` ### total 45 ### page 1 ### courses | course\_uid | course\_id | | -------------------------------- | ---------- | | course\_cc1de60e9953cdd9c469e9a5 | MATH 221 | | course\_fa53f4954bab469b5d4c4fe3 | MATH 341 | | course\_60c2767a206a079d3af2a1a4 | MATH 542 | ### matched true ## social Image false