There are a number of fantastic online resources available to help you with your studies. Below, I've listed some of my favourites and a brief description of what they offer. Please feel free to contact me if you discover anymore that deserve to be added to the list!
Online Tutorials and Practice Problems
Khan Academy - Khan Academy has thousands of short YouTube video tutorials on topics in math, science, economics and more. Each video is not more than 10 minutes long, and gives a brief explanation of the concept being covered as well as a few simple examples. Click the "Practice" tab to search for math practice problems.
IXL - IXL provides a series of math practice problems which increase in difficulty according to your needs. As you submit your answers, the site will gauge how long it took you to answer and how often you get the right answer, awarding you points for your "SmartScore" along the way. Once you've hit 100, you can be sure that you've mastered the concept! Although the site currently only goes up to "Grade 9" material, they are not tailored to the Quebec curriculum so plenty of the concepts appear in Secondary IV and V as well.
Explore Learning - This site features a ton of different "Gizmos", online simulations, that serve as an interactive way to help you understand math concepts. Gizmos allow you to play around with an idea and discover how things work in an interactive, visual way.
Cool Math - Cool Math features a number of fun games to help improve the accuracy and speed of your math skills.
IXL - IXL provides a series of math practice problems which increase in difficulty according to your needs. As you submit your answers, the site will gauge how long it took you to answer and how often you get the right answer, awarding you points for your "SmartScore" along the way. Once you've hit 100, you can be sure that you've mastered the concept! Although the site currently only goes up to "Grade 9" material, they are not tailored to the Quebec curriculum so plenty of the concepts appear in Secondary IV and V as well.
Explore Learning - This site features a ton of different "Gizmos", online simulations, that serve as an interactive way to help you understand math concepts. Gizmos allow you to play around with an idea and discover how things work in an interactive, visual way.
Cool Math - Cool Math features a number of fun games to help improve the accuracy and speed of your math skills.
Computational Resources
Scientific Calculator - Some of your homework may require the use of a scientific calculator. If you don't have one at home, this web version provides all the functions of a standard scientific calculator and can even plot graphs and convert units for you!
WolframAlpha - This site is an information and calculation powerhouse. It can perform calculations for everything from basic addition to advanced calculus, provide visual representations (like graphs or number lines) and can often show you all the steps in between as well (try typing in "find the zeros of x^2 + 2x + 1" to take a look. Notice the "Show Steps" button under the "Results" tab). For fun, try typing in your first name to see all the statistics related to it, including how common it is and the average age of someone with your name.
WolframAlpha - This site is an information and calculation powerhouse. It can perform calculations for everything from basic addition to advanced calculus, provide visual representations (like graphs or number lines) and can often show you all the steps in between as well (try typing in "find the zeros of x^2 + 2x + 1" to take a look. Notice the "Show Steps" button under the "Results" tab). For fun, try typing in your first name to see all the statistics related to it, including how common it is and the average age of someone with your name.
PDF Pad - This site has templates to let you print your own graph paper, calendars, storyboards, and other things.
Printable Paper Rulers - If you don't have a ruler at home, go to this site to print out your own. Rulers in cm, inches, and even metre sticks are available.