This post has been copied and protected (usual password) so that the Youtube videos have been embedded as MP4 files, so you can watch in school.
By Mysid (Own work. Self -made in Blender & Inkscape.) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
There are some great videos that can explain General Relativity much better than I can. A few are given below:
Remember at Advanced Higher you are expected to have a BASIC knowledge, not a deep knowledge of General Relativity. The purpose is to introduce you to some of the more modern (110 years!) Physics.
How does he make it sound just so simple and intuitive?
What’s the difference between Special and General Relativity?- Sixty Symbols, University of Nottingham.
Here is a playlist for all 11 videos by Dr PhysicsA. These are lovely clearly explained videos, that are easy to understand and digest.