SapiX 4th Grade Science Textbook 2024 Edition Daily SapiX 01-36 Textbooks are not included for 08, 10, 11, 12, 14, 16, 22, and 33; only answer keys and explanations are provided. For the above-mentioned exceptions, both the textbook and answer keys/explanations are included. There is minimal writing, less than one-third of the pages.