MY FEATURED ITEMS

My Products

Classical math game, use all 4 numbers and + - × / to make 24!
You can download more puzzles into a beautifully done PDF file at http://4nums.com/share

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TEACHING EXPERIENCE

We started 4nums.com in 2012 to promote the awesome 4numbers math game to the public. The game originated in China. Kids are given 4 numbers and they use + - x / to make 24. All our games, apps, downloadable PDF's are FREE at http://www.4nums.com !

MY TEACHING STYLE

Math is fun. Let kids play and learn at the same time!

HONORS/AWARDS/SHINING TEACHER MOMENT

IMO gold medalist

MY OWN EDUCATIONAL HISTORY

PhD in Engineering

ADDITIONAL BIOGRAPHICAL INFORMATION

all contents are at 4nums.com