Basic Book Design is a textbook suitable for high school students, Grade 9-12 (and adults) all about basic book design. The book is provided by Wikibooks, in the creative commons under a GNU open document license. As a project for English, art or computer studies, creating a book should be a compulsory activity in schools.
This writing textbook is a perfect text for a complete guide to writing, and suitable for aspects of introductory and advanced high school English students. The book contains a complete course in writing, from writing phases, drafting, editing, types of writing, to common phrases, word types, and improved use of English sentence structure.
Grade 12 English Language resources, lesson plans, reading and writing exercises and questions, released as OER in CC-BY-NC. Note while the lesson plans in this content are free, many texts they are based on are copyright and have to be purchased or obtained from a library. While there are some free copies around, the texts are copyright so they cannot be reproduced or linked here.
*Note: ELA resources from countries that are bilingual or where English is not the national language may differ from those where English is a national language curriculum, however, student English levels can vary significantly too, you can always look one or two grades up or down to find resources that fit your needs.
High School Mathematics Extensions is a textbook with exercises and provides around 250 pages of advanced high school maths. The book makes a great addition to high school curriculum, as assistance to understanding maths problems, or as a workbook for homeschool or extending children.
These Grade 12 maths textbooks are created by Siyavula for contribution to open education, they are licensed CC-BY-ND, or CC-BY-SA in the epub non-branded versions available on the Siyavula website.
These Grade 12 physics textbooks are created by Siyavula for contribution to open education, they are licensed CC-BY-ND, or CC-BY-SA in the epub non-branded versions available on the Siyavula website.