Easy Learning KS3 Revision has all the facts you need, highlighted levels and a clear design to make revising for KS3 SATs easy. Easy Learning - KS3 Science Revision Levels 5-7 provides all the information students need to achieve success in their science SATs. It is easy to use - clear layout and straightforward text; easy to revise - levels are clearly highlighted; and easy to remember - concise information organised in memorable chunks.