I am a teacher at 西铁一中。 I teach mathematics in English for students going abroad.

Now this is my problem, there are few mathematics books written in English that are at the level of high school, most are geared towards graduate school.

The book for the school is very dry and basic. I would like to be able to present better problems for my classes. I need help finding good problems, ones with some historical context or from real life events. Example: using a closed Leontief input-output model for linear algebra.

Or something along this line:

The quality of oxygen that can dissolve in water depends on the temperature of the water. (So thermal pollution influences the oxygen content of water.) The graph shows how oxygen solubility S varies as a function of the water temperature T. (a) What is the meaning of the derivatives S'(T)? What are its units? (b) Estimate the value of S'(16) and interpret it.

with graph

- From Calculus (6th Edition) by James Stewart.

My other problem is that I've got a group of 6 students that are übersmart. I gave them the AMC 10 & 12 problems, they solve them in class, then I gave them the USAMO problems, and they solve 4 problems in an hour (I gave them both days). Should I just give them the Putnam exams? Now, English textbooks cost a lot and I have to buy them out of my own pocket. Could you help me find online resources which are at the level of a high school student that is just learning calculus and which help him/her understand the more advance mathematical topics? Most I have found are just beyond their mathematical understanding.

The other 24 students are of lower ability than those 6 students.

In summary:

1) Where to find more realistic and historical problems for calculus and prob/stats classes? To help engage my students and improve their English. The graphs and data for the problems, don't worry I can solve it for the answers. Problems that bring in the other subjects : history, economics, etc.

2) What to do about the übersmart students? How to structure the class so the übersmart students don't get bored, but I don't leave the rest of the students behind?

3) Are there any books that are really graduate analysis, number theory, etc. however, are written for high school students?

4) What's your favorite word problem?