If you are watching for etexts at the App Store, you’ll find that more are being added every day, especially for high school science and mathematics. Both Pearson and McGraw-Hill, for example, have national editions of their biology books ready for download at $14.99 each. The books include traditional text content, interactive experiences, reading support, and options for encouraging student learning. There are also etexts for chemistry, physics, astronomy, environmental science, Algebra 1, Algebra 2, geometry, trigonometry, calculus, etc. If you’d like to browse a list of texts available at the App Store, click the link above and you’ll find those that are ready for download by clicking on “See all textbooks in the iBook store.” For many of the books, you can download sample chapters.