Free mathematics e-book for high school students.

Who can tolerate the banal syllabus of high school mathematics? Even Einstein would have admired our present day school students for their endurance power.

I have always wished to find something interesting and new to teach my math students. That should be something that is not included in their curriculum but still, the subject should stimulate their overall math solving ability.

Today, I came across an e-book that has several interesting topics not covered in the standard high school curriculum of most countries. It is for 14 to 18 year olds who are interested in mathematics in general.

It is free and is available at http://upload.wikimedia.org/wikibooks/en/a/ae/High_School_Mathematics.pdf