Crux Mathematicorum is a Canadian journal devoted to high school level math problems. This is a great source for getting students to develop their mathematical skills and develop their intuition and problem-solving skills. Articles from 2006 or earlier are available online without a subscription.
These problems from the University of South Carolina are a little easier but still lots of fun to do.
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems.
Here is a unit plan on lines and linear relationships suitable for a Grade 10 classroom. (This is required material for the course mentioned at the top of this page.)
These problems from the University of South Carolina are a little easier but still lots of fun to do.
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems.
Here is a unit plan on lines and linear relationships suitable for a Grade 10 classroom. (This is required material for the course mentioned at the top of this page.)