Covers first and second semester calculus material while teaching math majors to write and understand proofs.
Some students report that homework and exams are difficult, requiring memorization of proofs from notes rather than independent thinking. They criticize the lack of introductory proof instruction and contradictory materials.
All recorded terms · compare terms & instructors
MATH 234 or graduate/professional standing or member of the Pre-Masters Mathematics (Visiting International) Program
“Used by” includes alternatives; linked courses may have other requirements. This is a best-effort interpretation; check the catalog requirements above.
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Yayi Fu receives harsh criticism for delivering dense, whispering lectures that rely on copying PDF notes rather than explaining concepts. Reviewers describe her exams as memorization-focused and disconnected from homework, with one noting contradictions between textbook and lecture proofs.
Other students find Fu knowledgeable and committed to rigor, praising her clear notes and helpful hints for individual thinking. These reviewers report lenient grading, easy exams, and strong preparation for advanced courses, though they also note the lectures are very dense.
Recent recorded grades — Fall 2024: 3.47 GPA, 71.9% A/AB (n=32 letter grades); Spring 2025: 3.62 GPA, 76.7% A/AB (n=30 letter grades).
Historical reviews of Grace Work: Grace Work teaches clearly and is well-prepared, with a kind and straightforward style that supports student success if they attend lectures. While some students report harsh homework grading, the instructor herself is not responsible for those grades.
ANDREAS SEEGER is recorded teaching in Fall 2008, Fall 2018. Recorded history may be incomplete and does not establish a future schedule.
DONGHYUN LEE is recorded teaching in Fall 2016. Recorded history may be incomplete and does not establish a future schedule.
FLORIAN BERTRAND is recorded teaching in Spring 2010, Spring 2011. Recorded history may be incomplete and does not establish a future schedule.
GLORIA MARI-BEFFA is recorded teaching in Fall 2007, Spring 2016. Recorded history may be incomplete and does not establish a future schedule.
GRACE WORK is recorded teaching in Spring 2022, Spring 2023, Spring 2024, Spring 2025, Fall 2025. Recorded history may be incomplete and does not establish a future schedule.
JENNIFER BEICHMAN is recorded teaching in Fall 2013. Recorded history may be incomplete and does not establish a future schedule.
SIGURD ANGENENT is recorded teaching in Fall 2019. Recorded history may be incomplete and does not establish a future schedule.
SIMON SCHULZ is recorded teaching in Fall 2021, Fall 2022. Recorded history may be incomplete and does not establish a future schedule.
STEFFEN LEMPP is recorded teaching in Spring 2015. Recorded history may be incomplete and does not establish a future schedule.
XIANGHONG GONG is recorded teaching in Spring 2007. Recorded history may be incomplete and does not establish a future schedule.
YAYI FU is recorded teaching in Fall 2024, Spring 2025. Recorded history may be incomplete and does not establish a future schedule.
Recorded history may be incomplete and does not establish a future schedule.
Schedule loads here as you scroll.
| Section | Mode | Enrolled / capacity | Waitlist |
|---|---|---|---|
| LEC 001 | Classroom Instruction | 39 / 40 | 2 |
| LEC 003 | Classroom Instruction | 40 / 40 | 4 |
| LEC 002 | Classroom Instruction | 39 / 40 | 0 |
Times are Central. Select a meeting for details; export includes recorded dates for the selected sections. Enrollment reflects scan time.
Yayi Fu is knowledgeable and committed to rigor, with clear notes and helpful hints that support learning. Some students find her lectures dense but appreciate her clarity and responsiveness.
Recent recorded grades — Spring 2025: 3.24 GPA, 56.6% A/AB (n=106 letter grades); Fall 2025: 2.98 GPA, 42.5% A/AB (n=106 letter grades); Spring 2026: 2.99 GPA, 47.7% A/AB (n=88 letter grades).
Some students report that homework and exams are difficult, requiring memorization of proofs from notes rather than independent thinking. They criticize the lack of introductory proof instruction and contradictory materials.
Students appreciate Fu’s responsiveness on Piazza and lenient grading, finding her notes and hints helpful for understanding dense material. They recommend the class for those with prior proof exposure.
– average GPA
Approximate 80% prediction interval
The course’s semester-average GPA, not an individual student’s grade. The center uses 5 same-season terms, weighted toward recent results.
The range uses the finite-sample 80th-percentile rank of absolute errors from earlier same-season forecasts. Each forecast uses only records from earlier terms. At least four forecasts are required; bounds are rounded outward and limited to 0–4. This is an empirical estimate: changing instructors or grading policies can reduce its coverage.
8 earlier forecasts · 0.15 GPA average error.
Through Fall 2026
Latest available grades · Spring 2026 · all course levels
GPA
Higher than % of other courses in this group.
Course GPAs · red marks this course’s range
letter grades
More recorded grades than % of other courses in this group.
Typical course in this group: letter grades.
1283 courses over the same term, each with at least 30 recorded letter grades. Cross-listed courses count once. GPA is not a measure of difficulty or teaching quality. The typical course is the median by recorded grade count; tied values are not counted as lower. Grade counts describe course scale, not unique students or typical section size.
Descriptions compare GPA with this group’s average: at least 0.20 higher or lower; otherwise close to average. Section size uses median recorded enrollment: small up to 30, mid-sized 31–99, large 100+. Lectures and discussion/lab sections are described separately.
Descriptions, prerequisites, and recorded course offerings.
Observations at scan time; dates do not imply when a catalog change took effect.
The Theory of Single Variable Calculus
Recorded 2026-09-07[
{
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"semester": "1272",
"observed_at": "2026-09-07 15:55:43.033547+00:00",
"offering_id": "1272:600:021988",
"course_id": "MATH 421",
"course_uid": "course_4aa5bbed0c86993f5f0dc832",
"term_id": "1272",
"source_course_id": "021988",
"source_subject_id": "600",
"title": "The Theory of Single Variable Calculus",
"credits_min": 3,
"credits_max": 3,
"typically_offered": "Fall, Spring"
}
]Original comments behind the course and instructor summaries.
Recorded grade distributions by term, section, and instructor.
Explore recorded gradesRecorded model configuration, reasoning, and tool conversations.
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