Yongcheng Chen

Fifty Lectures for American Mathematics Competitions

2013

Mathcounts Solutions

2019

Mass Points Method

2017

American Mathematics Competitions Preparation

2018

American mathematics competitions (AMC 8) preparation

2014

三明史略

1995

Twenty Mock Mathcounts Target Round Tests

2013

The Area Method

2017

Taiwan de jing tan hao

2004

Problem Solving Using Vieta's Theorem

2017

Problem Solving Using the Rearrangement Inequality

2019

Problem Solving Using the Discriminant

2017

Problem Solving Using the AM-GM Inequality

2017

Problem Solving Using Auxiliary Lines

2017

Mathcounts Tips for Beginners

2013

Mathcounts State Competition Preparation Volume 4

2015

Mathcounts State Competition Preparation Volume 3

2015

Mathcounts State Competition Preparation Volume 2

2015