- What a nice parallelogram!
- I am glad you like it.
- What is that question mark doing in the center?
- I have tried to calculate the area of BQP, but so far without any luck.
- 6, 17, and 29 are the area of the triangles they are in?
- You are right. The problem is to find the area of the fourth triangle.
- Have you tried subtraction?
Problem source: The Emissary Spring 2009.
How well people communicate and work with people is more important than being up on the latest programming language. – Robert L Read
Find two numbers that when added and subtracted give to perfect numbers.
Good people want to be hired for their skills, not where they worked last or what school they went to or some other inessential characteristic. – Robert L Read
Do not train a child to learn by force or harshness; but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each. - Plato
GeoGebra is dynamic geometry software. Constructions can be made with points, vectors, segments, lines, polygons, conic sections, and functions. All of them can be changed dynamically afterwards. Elements can be entered and modified directly on screen, or through the command line. GeoGebra has the ability to use variables for numbers, vectors and points, find derivatives and integrals of functions and has a full complement of commands like Root or Extremum. Teachers can use GeoGebra to make conjectures and prove geometric theorems. – More
Let your students guess and play around with their guesses. Most schools can afford the software. It is free.
The other day I sold two books I bought a few years back. One of them gave me a 20% profit, while the other gave me a 20% loss. Together, however, the two books gave me a 5% profit.
I can’t seem to remember how much I sold each bok for, although I do remember that the total sale price was 1260 baht.
Problem source: Rudi Kessel, Mattenøtter.
An eye for an eye will only make the whole world blind. - Mohandas Gandhi
