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MATH 33A

Linear Algebra and Applications

4 units

Sections & times

Lecture and discussion. The registrar has published a final exam time.

Fall 2026: 3 lectures and 18 discussions. Nothing here is open. The oldest of these readings was 5 hours ago.

Grades

3.48

Average grade awarded in MATH 33A. Not a student rating: this is what the grades were.

In the A range

66%

of the 5,123 letter grades

D, F or W

3.7%

of every letter grade awarded, plus withdrawals

Taken pass/no pass

<1%

86% of those passed

The registrar's own records: 5,123 grades over 13 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.

What is inside that record

3 of those terms are summer sessions, and summer sessions are counted here.

The table below splits them, and term averages across those 13 terms ran 3.15 to 3.86.

Historical grades for MA, SIHAO, across recorded terms. The course summary above includes all professors.

No grade history is available for this professor in this course.

By instructor

Predicted GPA, raw average, sample size, terms, A range and the workload reviewers reported for every instructor with a grade record in this course
Instructor Predicted GPA Raw n Terms A range Workload Fall 2026
NIENHAUS, JAN reviews ↗ 3.42 3.42 660 3 61% very light not teaching it
SANCHEZ OCAL, PABLO reviews ↗ 3.85 3.86 575 2 92% very light not teaching it
GANNON, THOMAS ANTHONY reviews ↗ 3.56 3.57 500 2 73% very light not teaching it
SHIN, BRIAN YOUNGHO reviews ↗ 3.50 3.50 491 2 64% very light not teaching it
ARANT, TYLER JAMES reviews ↗ 3.06 3.04 473 2 40% light not teaching it
VENKATESH, SRIDHAR reviews ↗ 3.33 3.32 445 1 53% - not teaching it
YANG, TONGOU reviews ↗ 3.73 3.74 434 2 80% very light not teaching it
WANG, CHENGXI reviews ↗ 3.54 3.55 272 1 71% very light not teaching it
YEONG, WERN YEEN reviews ↗ 3.44 3.43 221 1 61% very light Closed
MIN, HYUNKI reviews ↗ 3.73 3.75 213 1 81% - not teaching it
KATAY, TAMAS reviews ↗ 2.98 2.94 207 1 40% - not teaching it
MUTLU AKATURK, HATICE reviews ↗ 3.24 3.22 202 1 57% very light not teaching it
SUZUKI, FUMIAKI reviews ↗ 3.54 3.55 156 1 67% light not teaching it
VESE, LUMINITA AURA reviews ↗ 3.68 3.71 144 1 80% - not teaching it
FAROLFI, GIULIO reviews ↗ 3.78 3.85 74 1 91% - not teaching it
JOHNSON, CASEY LYNN reviews ↗ 2.88 2.69 56 1 38% light not teaching it
Why Predicted is not the Raw average

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.

Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.

Reviews for MATH 33A

Workload and assignments

Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.

What the work looks like

  • Exams mentioned, no number given, said by 5 reviewers
  • Quizzes mentioned, no number given, said by 5 reviewers
  • Problem sets mentioned, no number given, said by 5 reviewers

Read from 676 reviews 17 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Read the source reviews

What comes first

The chain dibs can see is 3 courses long before MATH 33A. This is a floor, not a deadline: dibs has not read a class page for MATH 3B, so the real chain can only be longer than this, never shorter.

Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.

In Falls

Ran in 3 of the last 5 Falls, so it turns up in Fall sometimes rather than dependably.

From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.

From the registrar's catalog

Lecture, three hours; discussion, one hour. Enforced requisite: course 3B or 31B or 32A with grade of C- or better. Introduction to linear algebra: systems of linear equations, matrix algebra, linear independence, subspaces, bases and dimension, orthogonality, least-squares methods, determinants, eigenvalues and eigenvectors, matrix diagonalization, and symmetric matrices. P/NP or letter grading.

Sections in Fall 2026

You enroll in the discussion, not the lecture, so a discussion's status is the one that decides whether you get in. A lecture can read open while every discussion under it is full.

Seat counts as of : the oldest of these 21 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.

Final enrollment, averaged across each term's sections: between 156 and 266 a term over 10 terms, summer excluded, most recently 219 in Fall 2025. That is the shape across years, not this term, which is above.

From the people who took it

Student reviews

What taking MATH 33A was like: the work, the teaching, and what students wish they’d known.

Write a review

Your experience could be the first.

No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.

Looking for more perspectives?

External reviews are separate and do not count toward the dibs rating.

Read reviews on BruinWalk

Community guidelines

Seats over time in Fall 2026

How each lecture has filled since dibs first saw it. This course runs 3 lectures; the legend under the chart picks one.

A dot is a reading where something moved: the seat count, the status, or the waitlist.

What a flat run means, and where a line starts

Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.

Lec 1 · Yeong, W. · 210 of 210 enrolled

Filled by 29 over about 2 months

210 of 210 · no seats left in its discussions
17 Aug 15:079 Sep 08:492 Oct 02:32
dibs read 168 of the 700 hours its hourly record covers, 24%, and did not look in 532. dibs had no hourly record before 2 Sep, which is the other 392 of 1092 plotted.210 of 210 enrolled at the newest reading, 57 minutes ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 02:32, 181 to 210. dibs read 168 of the 700 hours its hourly record here covers, 24%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 532 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 23:00, where this section's record starts, has a read either way, which is 392 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Lec 2 · Ma, S. · 210 of 210 enrolled

Filled by 30 over about 2 months

210 of 210 · no seats left in its discussions
17 Aug 15:079 Sep 08:492 Oct 02:32
dibs read 168 of the 700 hours its hourly record covers, 24%, and did not look in 532. dibs had no hourly record before 2 Sep, which is the other 392 of 1092 plotted.210 of 210 enrolled at the newest reading, 57 minutes ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 02:32, 180 to 210. dibs read 168 of the 700 hours its hourly record here covers, 24%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 532 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 23:00, where this section's record starts, has a read either way, which is 392 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Lec 3 · Sempliner, J. · 210 of 210 enrolled

Filled by 35 over about 2 months

210 of 210 · no seats left in its discussions
17 Aug 15:079 Sep 08:492 Oct 02:32
dibs read 168 of the 700 hours its hourly record covers, 24%, and did not look in 532. dibs had no hourly record before 2 Sep, which is the other 392 of 1092 plotted.210 of 210 enrolled at the newest reading, 57 minutes ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 02:32, 175 to 210. dibs read 168 of the 700 hours its hourly record here covers, 24%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 532 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 23:00, where this section's record starts, has a read either way, which is 392 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.