Students reported that the homework directly prepares them for exams, which were described as very straightforward. The class involved lecture-heavy instruction.
What you’ll be able to do
Understand and use the standard methods and tools of mathematical argument (e.g. direct and indirect methods, the construction of examples and counterexamples, induction arguments).
State and describe the formal definitions of the mathematical objects and their properties used in elementary number theory (e.g., divisibility, prime numbers, congruences, etc.).
State and apply the main theorems in elementary number theory (e.g. theorems related to modular arithmetic, divisibility, prime numbers, Fermat's Little Theorem).
Prove or disprove statements and evaluate the validity of arguments related to the definitions, properties, and theorems of elementary number theory.
“Used by” includes alternatives; linked courses may
have other requirements. This is a best-effort interpretation; check the
catalog requirements above.
Raw average: 4.00/5 from 3
quality ratings. The adjusted rating blends this with the UW review average
(3.66/5), weighted as 20
additional ratings. Smaller samples stay closer to that average. Each
captured review is counted once in the prior; this does not correct who
chooses to leave a review.
RMP profile ↗ · All captured review dates; profile matched by name.
No course-specific feedback yet.
Historical instructors & teaching patterns
ANANTH SHANKAR is recorded teaching in Fall 2022. Recorded history may be incomplete and does not establish a future schedule.
BOTONG WANG is recorded teaching in Fall 2025. Recorded history may be incomplete and does not establish a future schedule.
DANIEL ERMAN is recorded teaching in Fall 2021. Recorded history may be incomplete and does not establish a future schedule.
MIKHAIL IVANOV is recorded teaching in Fall 2023. Recorded history may be incomplete and does not establish a future schedule.
MITCH KELLER is recorded teaching in Fall 2024. Recorded history may be incomplete and does not establish a future schedule.
Recorded history may be incomplete and does not establish a future
schedule.
Calendar & sections
Spring 2027
Schedule loads here as you scroll.
Section
Mode
Enrolled / capacity
Waitlist
LEC 001
Classroom Instruction
0 / 40
0
Times are Central. Select a meeting for
details; export includes recorded dates for the selected sections. Enrollment reflects scan time.
The course is lecture-heavy with engaging sessions that break down advanced concepts using examples. Homework directly prepares students for straightforward exams.
Recent recorded grades — Spring 2025: 2.97 GPA, 44.1% A/AB (n=34 letter grades); Fall 2025: 3.34 GPA, 58.8% A/AB (n=68 letter grades); Spring 2026: 2.48 GPA, 35.5% A/AB (n=31 letter grades).
difficulty & workload
Past student reviews · Botong Wang
Students reported that the homework directly prepares them for exams, which were described as very straightforward. The class involved lecture-heavy instruction.
Past student reviews · Botong Wang
Learners found the lectures engaging and appreciated that the instructor motivated almost everything with examples, making understanding easier.
Topics
Divisibility
Basic properties of primes
Congruences
Fermat's theorem
Proof writing techniques
Skills
Proof writing techniques
Standard methods and tools of mathematical argument
Formal definitions of mathematical objects in elementary number theory
Application of main theorems in elementary number theory
Proving or disproving statements and evaluating argument validity
Grades
Latest available · Spring 2026— not enough history to project Spring 2027.
average GPA
A / AB grades
letter grades
Instructor
Grade distribution · % of letter grades
A22.6%22.6%
AB12.9%12.9%
B12.9%12.9%
BC6.5%6.5%
C22.6%22.6%
D12.9%12.9%
F9.7%9.7%
Grades over time
Through Spring 2026
More grade details Grade mix, volume & source data
Where this course fits relative to
Latest available grades · Spring 2026 · all course levels
2.482.48GPA
Higher than 00% of other courses in this group.
Course GPAs · red marks this course’s range
3131letter grades
More recorded grades than 33% of other courses in this group.
Typical course in this group: 66.066.0 letter grades.
About this comparison
1280 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.
Sources & history
UW–Madison
Catalog & offerings
Descriptions, prerequisites, and recorded course offerings.
Catalog observation history
Observations at scan time; dates do not imply when a catalog change took effect.