Courses Taught

• MAT 012 : Basic Arithmetic and Algebra

  This course is a combination of arithmetic and elementary algebra. It includes the arithmetic of integers, fractions, decimals, and percent. In addition, such topics as signed numbers, algebraic representation, operations with polynomials, factoring, the solution of simultaneous linear equations of two variables, and graphing are covered.

• MAT 041 : Mathematics Literacy Quantway I
  This developmental course provides an alternative and accelerated pathway to the college-level liberal arts mathematics courses. The course will focus on applications of numerical reason to make sense of the world around us. Applications of arithmetic, proportional reasoning and algebra are emphasized. This course cannot be used as a prerequisite for MAT 056 and is not suited for Science, Technology, Engineering or Mathematics (STEM) students.
• MAT 051 : Elementary Algebra

  This course is the first algebra course offered at the College. It includes such topics as algebraic representation, signed numbers, operations with polynomials, factoring, the solution of linear equations, the coordinate system, the solution of simultaneous linear equations of two variables, and graphing. This course is designed to prepare students for the CUNY Freshman Skills Assessment Test required for transfer to the upper division of CUNY, as well as for more advanced math courses. If a student passes MAT 012, the student should not register for MAT 051, since MAT 012 combines MAT 011 and MAT 051.

• MAT 056 : Intermediate Algebra and Trigonometry

  This course is the second algebra course offered at the college. It is open to students who have completed elementary algebra or its equivalent. It includes such topics as: factoring, solutions of linear and quadratic equations, trigonometric relationships, exponents, logarithms, and the graphs of quadratic equations.

• MAT 150 : Introduction to Statistics
  This course covers basic statistics, including: measures of central tendency, measures of dispersion, graphs, correlation, the regression line, confidence intervals, the significance of differences, and hypothesis testing, including z-tests, t-tests, and chi-square tests.

Publications

• What's happening in the mathematics classroom? Discussion about RBI based on New national standard in Korea, East Asian Mathematical Journal
  
• Using the Standard Form to Explore Parallel and Perpendicular Lines, New York State Mathematics Teachers Journal (NYSMTJ)
• An Exce-L-ent Algorithm for Factors and Multiples, Mathematics Teaching in Middle School (NCTM)
• Exploring Calculus Problems with GeoGebra, MathAMATYC Educator
• A New Approach to Factoring Trinomial ax^2+bx+c, The New Jersey Mathematics Teacher
  

Current Interests

Alternative Teaching and Leanring Algorithm

Common Core State Standard and School Curriculum

Teaching Mathematics using Techonlogy

Reform Based Instruction (Group Discussion Method) 

Honors & Awards

• PSC-CUNY (2013) Research Award
  

Current Projects

• Exploring mathematical reasoning of the Order of Operations: Rearranging the procedural component PEMDAS and students’ discoveries
  

  PEMDAS is one of the mnemonic devices to memorize the prior order to calculate if an expression contains more than one operation. However, students frequently make miscalculation with the expression which has either multiplication and division, or addition and subtraction are next to each other. This project explores the mathematical reasoning of the Order of Operation, and the effectiveness of a new approach. In addition, it observes students' discoveries

Expertise

Degrees

• Ed.D. Teachers College, Columbia University,  Mathemaitcs, 
• B.S. SunMoon University, South Korea,  Chemistry , 
• M.A. Teachers College, Columbia University,  Mathematics,