The guide is organised by the assessment structure of the qualification and gives students guidance on the external assessment.   Key point summaries of what candidates should know are included to reinforce teaching.  Information is presented in a straightforward, user-friendly way. Worked examples, exam questions, revision practice questions and ''test yourself'' diagnostic questions prepare students for the exams ahead. In addition, the Revision Guide provides students with all the answers to all the questions in the book.   ''BTEC Award in Principles of Applied Science Unit 1 Revision Guidereplacement page 4'' ''Unfortunately it has come to our attention that the fonts used for the ticks and crosses in the table on page 4 were corrupted to become 3s and 7s. Download a corrected page. The corrections will be included in the first reprint of the Principles of Applied Science Revision Guide.''