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MATH 33A

Linear Algebra and Applications

4 units

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 13 hours ago.

See sections

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

Reported assignments across instructors and terms. This term's syllabus may differ.

What the work looks like

  • Exams mentioned, no number given, 5 mentions in past reviews
  • Quizzes mentioned, no number given, 5 mentions in past reviews
  • Problem sets mentioned, no number given, 5 mentions in past reviews

Based on 676 reviews; source checked about 1 month ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Read reviews on BruinWalk

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

Choose an open discussion to enroll; an open lecture alone does not mean a seat is available.

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

  • Lec 1

    MWF 9:00am-9:50am

    Closed

    Lecture: 210 of 210 · 18 over enrolled

    Yeong, W.

    3.44

    Predicted GPA

    Historical records for YEONG, WERN YEEN; 221 letter grades
    high risk
    6 discussions, none open. No waitlist listed.Every discussion, with its time and seats: 6 discussions
    • Dis 1A

      T 9:00am-9:50am · Mathematical Sciences 5137

      Closed

      35 of 35 · 3 over enrolled

    • Dis 1B

      R 9:00am-9:50am · Mathematical Sciences 5137

      Closed

      35 of 35 · 3 over enrolled

    • Dis 1C

      T 9:00am-9:50am · Rolfe Hall 3121

      Closed

      35 of 35 · 3 over enrolled

    • Dis 1D

      R 9:00am-9:50am · Rolfe Hall 3121

      Closed

      35 of 35 · 3 over enrolled

    • Dis 1E

      T 9:00am-9:50am · Royce Hall 156

      Closed

      35 of 35 · 3 over enrolled

    • Dis 1F

      R 9:00am-9:50am · Royce Hall 156

      Closed

      35 of 35 · 3 over enrolled

  • Lec 2

    MWF 11:00am-11:50am

    Closed

    Lecture: 210 of 210 · 11 over enrolled

    Ma, S.

    3.48

    Predicted GPA

    Historical records across all instructors; 5,123 letter grades
    high risk
    6 discussions, none open. No waitlist listed.Every discussion, with its time and seats: 6 discussions
    • Dis 2A

      T 11:00am-11:50am · Mathematical Sciences 5137

      Closed

      35 of 35 · 3 over enrolled

    • Dis 2B

      R 11:00am-11:50am · Mathematical Sciences 5137

      Closed

      35 of 35 · 2 over enrolled

    • Dis 2C

      T 11:00am-11:50am · Mathematical Sciences 5138

      Closed

      35 of 35 enrolled

    • Dis 2D

      R 11:00am-11:50am · Mathematical Sciences 5138

      Closed

      35 of 35 · 1 over enrolled

    • Dis 2E

      T 11:00am-11:50am · Rolfe Hall 3129

      Closed

      35 of 35 · 3 over enrolled

    • Dis 2F

      R 11:00am-11:50am · Rolfe Hall 3129

      Closed

      35 of 35 · 2 over enrolled

  • Lec 3

    MWF 12:00pm-12:50pm

    Closed

    Lecture: 210 of 210 · 13 over enrolled

    Sempliner, J.

    3.48

    Predicted GPA

    Historical records across all instructors; 5,123 letter grades
    high risk
    6 discussions, none open. No waitlist listed.Every discussion, with its time and seats: 6 discussions
    • Dis 3A

      T 12:00pm-12:50pm · Bunche Hall 2178

      Closed

      35 of 35 · 3 over enrolled

    • Dis 3B

      R 12:00pm-12:50pm · Bunche Hall 2178

      Closed

      35 of 35 enrolled

    • Dis 3C

      T 12:00pm-12:50pm · Royce Hall 156

      Closed

      35 of 35 · 3 over enrolled

    • Dis 3D

      R 12:00pm-12:50pm · Royce Hall 156

      Closed

      35 of 35 · 3 over enrolled

    • Dis 3E

      T 12:00pm-12:50pm · Mathematical Sciences 5127

      Closed

      35 of 35 · 3 over enrolled

    • Dis 3F

      R 12:00pm-12:50pm · Mathematical Sciences 5127

      Closed

      35 of 35 · 1 over enrolled

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.

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 · 18 over enrolled

Nothing read since 16 Oct, 13 hours ago. Over the 2 months before that, filled by 29.

210 of 210 · no seats left in its discussions
17 Aug 15:0716 Sep 15:5416 Oct 16:42 · 13 hours ago
Checked 168 of the 601 hours with hourly history, 28%. No reading was recorded in 433 hours. dibs had no hourly record before 21 Sep, which is the other 841 of 1442 plotted.210 of 210 enrolled at the newest reading, 13 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 16 Oct 16:42, 181 to 210. Checks are not continuous monitoring. Changes between checks may be missed.

Lec 2 · Ma, S. · 210 of 210 · 11 over enrolled

Nothing read since 16 Oct, 13 hours ago. Over the 2 months before that, filled by 30.

210 of 210 · no seats left in its discussions
17 Aug 15:0716 Sep 15:5416 Oct 16:42 · 13 hours ago
Checked 168 of the 601 hours with hourly history, 28%. No reading was recorded in 433 hours. dibs had no hourly record before 21 Sep, which is the other 841 of 1442 plotted.210 of 210 enrolled at the newest reading, 13 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 16 Oct 16:42, 180 to 210. Checks are not continuous monitoring. Changes between checks may be missed.

Lec 3 · Sempliner, J. · 210 of 210 · 13 over enrolled

Nothing read since 16 Oct, 13 hours ago. Over the 2 months before that, filled by 35.

210 of 210 · no seats left in its discussions
17 Aug 15:0716 Sep 15:5416 Oct 16:42 · 13 hours ago
Checked 168 of the 601 hours with hourly history, 28%. No reading was recorded in 433 hours. dibs had no hourly record before 21 Sep, which is the other 841 of 1442 plotted.210 of 210 enrolled at the newest reading, 13 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 16 Oct 16:42, 175 to 210. Checks are not continuous monitoring. Changes between checks may be missed.
How readings and alerts work

Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.

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.