You can find instructional videos by clicking on: topics in the table of contents below, the categories to the right, the tags to the right and down, or by searching in the search bar to the right and up.
– Not the same ordering as in lectures
Learning and Practicing Mathematics via the Internet
The Khan Academy, available at http://www.khanacademy.org/, has over 2600 videos, many of which are mathematics. You can watch videos without logging in, but signing up only requires a Google account or a Facebook account and means your activity is recorded so that points and badges are earned by watching videos.
When each problem in the video is presented you should pause the video and attempt to solve the problem yourself. Once you have had an attempt or two, continue watching the video to see the approach taken by the presenter. At the end of the video you can often click the green ‘Practice this concept’ button above and to the right of the video.
Some of the videos start very basic and progress, some are just basic as an introduction for the next video, but if you can’t understand something in the video, there is help available. You could leave a comment on the post that sent you to the video, leave a comment on the video in the Khan Academy, search YouTube (http://patrickjmt.com/, http://rootmath.org/, AlRichards314 and Bullcleo1 are all good channels), the Khan Academy or this Maths Support Site for another explanation.
Another amazing collection of material designed to educate the public is MIT OpenCourseWare, go on have a browse. Possibly most useful to you is the
A group that call themselves the world wide centre of mathematics has a good series of long lectures on calculus, you can find their collections here.
There are also some decent textbooks available online
Differential equations (HK University)
GAIM 2 – Getting Ahead in Mathematics 2 – MATH1120 University of Newcastle, Australia