LIVE 125: Introduction
W 1–2am from 11/6 (Your Time*)
This LIVE course contains a total of 20 hours of live video instruction (~$22/hour), plus 1 year of access to Prof. Loh's recorded videos from this course.
We’ve carefully designed our courses to maximize engagement. Each of our LIVE classrooms has at least one staff member for every 13 students. The typical class size is around 30 students.
* The official meeting time for this course is 8:00pm in New York.
The class time will change over the duration of this session, because your country's Daylight Savings Time adjustments differ from the target time zone of this course.
Diagnostic Tests:
Calendar
Classes will meet on the highlighted dates. Click on any date to view the topics for that day.
Color Key:
Lesson on new topic
Discuss homework challenge
Reviews
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Very good, I like it very much, it’s the most fun class that I learn
NUUUUUUUUUUUUUUUUUUUUUUUUU I DONT WANT IT TO END. NO, NO, NO. I DON'T WANT TO LEAVE. I WANT TO STAY.
Wow, this math is so beautiful and elegant! This is my favorite class♥️ It is the most awesome and fun math class ever
I find it great! The teachers are amazing! They always explain. Also, they calmly point out mistakes and key points which are crucial in solving the problem.
it was fantastic
I love the lesson
My son was very happy and he told me that he had learnt a lot of new things and new ways of thinking. He got really engaged, although, before starting the course, he would say "I don't want to study during my vacations"... Thank you for your leadership and educational skills during the Module 0 course that my son took during the past 4 weeks.
it’s really a wonderful class
Its easy to follow. I like the videos
My daughter has enjoyed this class very much and is planning to take further classes with “LIVE” in the fall. Both of the instructors are doing an amazing job!
This is complicated but interesting at the same time
This is the coolest prof ever
Thank you so much for the detailed and insightful feedback you provided for this course. Your thorough analysis and constructive suggestions were incredibly helpful and have given me a clearer understanding of the areas that need improvement.
I think rat chelay is the best
Syllabus
The 20 course meetings are split in 16 lessons (called Day 1 through Day 16 below), and 4 homework exam discussions. Each exam discussion meeting happens after 4 lessons.
Day 1
Geometry: areas of plane figures; congruent triangles; Pythagorean Theorem
Day 2
Algebra; Geometry; Number Theory: area and volume of 3-D solids; prime numbers; prime factorization; systems of equations; transforming equations; square roots
Day 3
Combinatorics: permutations; exclusion; complementary counting
Day 4
Probability: counting; permutations; symmetry
Day 5
Logic; Algebra; Statistics: equations in one variable; arithmetic series; the substitution method; average; word problems
Day 6
Geometry: volume; similar figures; ratio and proportion; proportional lengths
Day 7
Number Theory: least common multiple; prime numbers; unique factorization
Day 8
Combinatorics: combinations; binomial coefficient identities; the multiplication principle
Day 9
Algebra: rate-time-distance problems; problem-solving using diagrams
Day 10
Geometry: circumference of a circle; irrational numbers; the distributive property; using equations to solve problems
Day 11
Probability: percents with applications; decimals; conditional probability; sets; total probability; equations in one variable
Day 12
Number Theory: word problems; parity; number of factors; prime factorization
Day 13
Geometry: angles of a polygon; sum of angles of a polygon; properties of parallel lines; interior and exterior angles;
Day 14
Algebra: reciprocals; sequences and series; factoring integers; least common denominator
Day 15
Combinatorics: counting; permutations; problem-solving using diagrams; linear recurrence relations; Fibonacci sequences
Day 16
Number Theory: Integers modulo m; square numbers; number sense techniques; variables
Co-Stars
BENNY WANG
USAJMO Qualifier • HMIC Qualifier • USACO Gold • Enjoys writing math problems and playing piano
click for more
ALLISON SHEN
Math Prize for Girls Qualifier • 3-Time AIME Qualifier • AMC 8 Perfect Score • School math club president • Indy Integirls Head Problem Writer • Indiana ARML A Team • Enjoys contemplating puzzles and books!
click for more