by Dr. George Ho



Book Details

Language : English
Publication Date : 11/21/2019

Format : Softcover
Dimensions : 6x9
Page Count : 168
ISBN : 9781796007862
Format : Hardcover
Dimensions : 6x9
Page Count : 168
ISBN : 9781796007879
Format : E-Book
Dimensions : N/A
Page Count : 168
ISBN : 9781796007855

About the Book

The book enhances the structure and contents of the old Crossnumber puzzles by making their clues clearer, easily and quickly understood, the numbers easily located and relationships between numbers easily described. The book has 50 puzzles of 5 levels of difficulty, covering sophisticated mathematical knowledge, not just simple arithmetical relations between numbers, making the solving of the puzzles more challenging and more useful to the development of the brain and the acquisition of mathematical abilities.

About the Author

Dr George Ho (aka Thuan Hoa, Ho Van Hoa) graduated from University of Pedagogy in Vietnam (1962), major mathematics. He hold a Bachelor of mathematics (1965) and a Doctorate ├Ęs sciences (March 1975) at University of Sciences in Vietnam. He spent 7 years in high school teaching mathematics (1962-1969) and 10 years in Department of Theoretical Physics, University of Sciences.