CHRISTmaths

CHRISTmaths is a creative math problem solving book with a recreational flavor, by leveraging on the Christmas theme to posing and solving nonroutine math problems.

The 196-page fun book would appeal to:

* readers wishing to brush up their mathematical problem-solving skills in a fun and recreational manner;

* problem solvers wanting to experience some aha! moments while solving some fertile questions;

* students and mathletes longing for some creative mathematics as they flee from drill-and-kill assessment books.

CHRISTmaths answers questions such as these: What day of the week is Christmas in 2025?

How many zeros are there in 1 x 2 x 3 x ... x 24 x 25?

Was Pythagoras a pre-Christian Christian?

12 Challenges @ Christmastime

...

25 Mathematical Quickies & Trickies

Xmas Philamath

The 12 Puzzles of Christmas

...

Christmas Tangrams

CHRISTMAS Alphabetics

The Twelve Days of Christmas

.... and many more.

Yan Kow Cheong is a math coach, writer, and editor. A math consultant for "MathPlus Consultancy," he specializes in both adult and recreational math education. He conducts recreational and competition math courses and workshops for schools and enrichment centers, and educates the public against innumeracy and pseudoscience.

Kow Cheong has ghostwritten and edited both local and foreign textbooks and assessment (or supplementary) titles for students, teachers, and parents. Some of his publications are:

Additional Maths 360;

Word Problems in Focus series;

Challenging Word Problems (Common Core Edition) series;

Mathematical Quickies & Trickies;

Geometrical Quickies & Trickies;

Aha! Math.

His academic interests involve research in math education, in particular, the psychology of learning and teaching mathematics, and creative problem solving. He is a life member of both the Singapore Mathematical Society (SMS) and the Association of Mathematics Educators (AME). He is also a member of The Association of Christians in the Mathematical Sciences (ACMS).