<p>I am a student attending Exeter and yes, we do not use text books and no formulas are given to us. However, because we are forced to derive and solve these problems and formulas ourselves, we gain a in depth knowledge in math. We don’t just know how to solve it, we know how it works inside and out. The teaching system teaches elegance, understanding, and efficiency when solving problems.</p>
<p>For example. I was able to solve this problem in 10 seconds after Exeter math. This is math 2 which is the equivalent to geometry and algebra 2.</p>
<p>You have a 6 by 16 rectangle ABCD where AB and CD are 6, and AD and BC are 16. N is the midpoint of AB and M is the midpoint of BC. Where they intersect is P. What is the length of AP?</p>
<p>Looks a little tricky no? Many students will probably try to graph it and use distance formula. Works, but very inefficient. If you draw a diagonal from A to C, you will notice you have a right triangle. This means that P is actually the centroid of triangle ABC. Given that, we know AB is 6, BM is 8, and therefore, by pythagorium or plain right triangles, we know AM 10. Given properties of centroids, we know that AP = 2/3 AM, which is 20/3. </p>
<p>Elegence is one thing, but what about deriving the methods you use? Do you know how to prove that the centroid makes it so that AP = 2/3 AM? Or even the proof for the distance formula or pythagorium theorum?</p>
<p>Or if you are more advanced
Why is the limit as x->infinity of (1+1/x)^x = e and not 1? Can you prove that it has to be bigger than 2 using just algebra? (bionomial expansion with x = infinity will give the first two terms as 1 + 1)</p>
<p>Draw a sin graph and an arcsin graph in radians. Does your two graphs intersect with each other other than at the origin? What is the proof that they cannot interesct anywhere other than at the origin?</p>
<p>Like the wise saying, “You can give a man a fish and feed him for a day, or you can teach him how to fish and feed him for life.” Exeter teaches us how to “fish” in math! When we encounter new problems, we can solve it and we do it efficiently. Just knowing how to solve the problem or using the formula is not enough. We are taught to know it inside out and all its tricks and puzzles and understand exactly how each and every part works. </p>
<p>There is a reason why we sent 5 people to USAMO this year our of the 12 qualifers in the nation. The system teaches brilliantly.</p>