The attached files, ORIGLIFE.PDF and ORIGOHDS.PDF, are intended as a stand-alone supplement to high school biology textbooks dealing with the origin of life. Though written from a creation perspective, the material is purely scientific in its approach. Since it makes no mention of God, the Bible, or any religious concepts (the words "creation" is not even mentioned), it is suitable for use in a public school science class. ORIGLIFE.PDF is a detailed critique of the most common evolutionary scenario for the origin of life, known as the Oparin-Haldane hypothesis. ORIGOHDS.PDF is a set of overhead transparency masters keyed to the lesson. Both PDF files require the free Adobe Acrobat Reader to view and print. If you wish to project the overheads directly from a computer onto a screen, simply set the Adobe Acrobat viewer to "View - Full Screen." This material is copyrighted but free of charge. You may reproduce it provided that: (1) It is used for educational purposes only; (2) No commercial use may be made of it; and (3) The lesson must be reproduced in its entirety. Please send comments and suggestions to the author: David A. Prentice, M.Ed. Email: prentice@instruction.com (Overheads may contain clipart from one or more of the following: IMSI, Corel, Media Graphics Intl., Serif, NASA.)