Books
Yan Kow Cheong's Author Page on Amazon: Amazon.com/author/yankowcheong
Check out K C Yan's books on Amazon.com: http://tinyurl.com/
The two paperbacks on the Singapore's Stack Model Method may be ordered from Amazon, or as an e-book from iTunes and Google play.
Grades 3–4
Amazon: http://tinyurl.com/kao2lan
Google play: http://tinyurl.com/pqfeh9s
Apple: https://itun.es/us/JCU84.l
Grades 5–6
Amazon: http://tinyurl.com/mhyct9k
Google play: http://tinyurl.com/my8q3dt
Apple: https://itun.es/us/fP384.l
Fan Page: fb.com/singaporemathplus
More Mathematical Quickies & Trickies
Geometrical Quickies & Trickies
CHRISTmaths: A Creative Math Book