# Math Challenge IV

### Course Description

This course is for experienced students who can solve at least a few problems in the AIME contest and qualify or almost qualify for USA(J)MO. In this course, the students learn more in-depth math concepts and problem-solving strategies that involve more rigorous mathematical writing and a broad range of topics. Students are trained to comfortably solve the AIME problems to qualify for USA(J)MO, also to comfortably write mathematical proofs for problems at the USA(J)MO level, aiming to win USA(J)MO and get into the prestigious MOSP. The topics include everything covered in MC-III with more depth, and additional topics such as quadratic residue, Diophantine equations, recurrence, proving inequalities, mathematical induction, functional equations, generating functions, inversion, projective geometry, and rigorous proof-writing practices. Through the effective guidance and direction by our experienced teachers, students develop strong problem solving skills that make them perform well in AIME and USA(J)MO.

### Course Terms

Math Challenge IV is offered in four terms:

- Summer, Trigonometry and other selected Math Olympiad topics.
- Fall
- Winter
- Spring, with topics Pigeonhole Principle, Induction, Functional Equations, Inequalities, and Diophantine Equations.

Note: This is a multi-year class. Students may continue to enroll in MC-IV for up to 3 years and all the major math Olympiad sub-topics shall be covered. Since the size of this class is small, the topics are customized according to the knowledge level of the enrolled students. For more information about the topics covered each term, please click here.

### Course Meetings

This course meets Saturdays 4:00-5:30 PM Pacific Time. For the specific dates of the course please see the full course schedule by clicking here.

### Registration and Tuition

Click on any of the courses below to register! You will be prompted to login or create a new account if you have not already done so. Registration options include:

- Single Term, \$550
- Year Packet, \$1980 (Save 10%!)

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Summer 2024, Fall 2024, Winter 2024-25, and Spring 2025.

The focus of the summer term of Math Challenge IV is problem solving with algebra.

The ten live class sessions will be on the following dates: 6/8, 6/15, 6/22, 6/29, 7/13, 7/20, 7/27, 8/3, 8/10, 8/17.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Spring 2024, Summer 2024, Fall 2024, and Winter 2024-25.

The focus of the spring term of Math Challenge IV is problem solving with number theory.

The ten live class sessions will be on the following dates: 3/2, 3/9, 3/16, 3/23, 4/6, 4/13, 4/20, 4/27, 5/4, 5/11.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Winter 2023-24, Spring 2024, Summer 2024, and Fall 2024.

The focus of the winter term of Math Challenge IV is problem solving with combinatorics.

The ten live class sessions will be on the following dates: 12/2, 12/9, 12/16, 1/6, 1/13, 1/20, 1/27, 2/3, 2/10, 2/17.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Fall 2023, Winter 2023-24, Spring 2024, and Summer 2024.

The focus of the summer term of Math Challenge IV is problem solving with geometry.

The ten live class sessions will be on the following dates: 9/9, 9/16, 9/23, 9/30, 10/7, 10/14, 10/21, 10/28, 11/4, 11/11.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Summer 2023, Fall 2023, Winter 2023-24, and Spring 2024.

The focus of the summer term of Math Challenge IV is problem solving with algebra.

The ten live class sessions will be on the following dates: 6/10, 6/17, 6/24, 7/8, 7/15, 7/22, 7/29, 8/5, 8/12, 8/19.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Spring 2023, Summer 2023, Fall 2023, and Winter 2023-24.

The focus of the spring term of Math Challenge IV is problem solving with number theory.

The ten live class sessions will be on the following dates: 3/4, 3/11, 3/18, 3/25, 4/1, 4/15, 4/22, 4/29, 5/6, 5/13.

Students enrolled in this bundle have access to 4 Terms of Math Challenge IV: Winter 2022-23, Spring 2023, Summer 2023, and Fall 2023.

The focus of the winter term of Math Challenge IV is problem solving with combinatorics.

The ten live class sessions will be on the following dates: 12/3, 12/10 (canceled), 12/17, 1/7, 1/14, 1/21, 1/28, 2/4, 2/11, 2/18, 2/25.

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