SHS References
The following free resources are from Openstax.org.
Applied Economics
Principles of economics: https://assets.openstax.org/oscms-prodcms/media/documents/Economics2e-OP_s2jF42u.pdf
Principles of microeconomics: https://assets.openstax.org/oscms-prodcms/media/documents/Microeconomics2e-OP.pdf
Principles of Macroeconomics: https://assets.openstax.org/oscms-prodcms/media/documents/Macroeconomics2e-OP_WRQqkIv.pdf
Business Ethics and Social Responsibility
chemistry
HUMANITIES and SOCIAL SCIENCES (HUMSS)
Writing Guide with handbook: https://assets.openstax.org/oscms-prodcms/media/documents/WritingGuide-WEB.pdf
Introduction to Philosophy: https://assets.openstax.org/oscms-prodcms/media/documents/Introduction_to_Philosophy-WEB_cszrKYp.pdf
Organization and Management
Principles of management: https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/PrinciplesofManagement-OP.pdf
Management Principles: https://2012books.lardbucket.org/pdfs/management-principles-v1.0.pdf
Introduction to Business: https://assets.openstax.org/oscms-prodcms/media/documents/IntroductionToBusiness-OP_8D04gAa.pdf
Introductory Business Statistics: https://openstax.org/details/books/introductory-business-statistics
Organizational behavior: https://assets.openstax.org/oscms-prodcms/media/documents/OrganizationalBehavior-OP_TtwWIeQ.pdf
Principles of Accounting: Financial Accounting (Vol. 1): https://assets.openstax.org/oscms-prodcms/media/documents/FinancialAccounting-OP_YioY6nY.pdf
Principles of Accounting: Managerial Accounting (Vol. 2): https://assets.openstax.org/oscms-prodcms/media/documents/ManagerialAccounting-OP_x3x7rSO.pdf
Principles of Finance: https://assets.openstax.org/oscms-prodcms/media/documents/PrinciplesofFinance-WEB.pdf
Principles of Management: https://assets.openstax.org/oscms-prodcms/media/documents/PrinciplesofManagement-OP_mGBMvoU.pdf
physics
College Physics: https://assets.openstax.org/oscms-prodcms/media/documents/College_Physics-WEB_2s5sHvR.pdf
College Physics 2: https://assets.openstax.org/oscms-prodcms/media/documents/College_Physics_2e-WEB_7Zesafu.pdf
Physics (High School): https://assets.openstax.org/oscms-prodcms/media/documents/Physics-WEB_Sab7RrQ.pdf
Everything Science: Grade 12 Physical Sciences: https://globeelibrary.ph/books/read/grade-12-physical-sciences
University Physics (Vol.1): https://assets.openstax.org/oscms-prodcms/media/documents/UniversityPhysicsVol1-WEB.pdf
University Physics (Vol.2): https://assets.openstax.org/oscms-prodcms/media/documents/UniversityPhysicsVolume2-WEB_5eNhMSa.pdf
University Physics (Vol.3): https://assets.openstax.org/oscms-prodcms/media/documents/UniversityPhysicsVolume3-WEB.pdf
General Physics: http://www.pgccphy.net/1030/phy1030.pdf
Precalculus
Precalculus: https://d3bxy9euw4e147.cloudfront.net/oscms-qa/media/documents/Precalculus-LR.pdf
Precalculus: https://www.spps.org/cms/lib010/MN01910242/Centricity/Domain/6062/PreCalculus%20Text.pdf
Precalculus: an investigation of functions: https://openresearchlibrary.org/viewer/6d9705ca-07ce-4a16-b1ea-d5cb91528ec5/1
Precalculus: https://openresearchlibrary.org/viewer/350966be-5204-4e56-9971-0de5d465bbb4/1
Precalculus: College algebra and trigonometry: https://openresearchlibrary.org/viewer/e7741e9e-c6d8-4649-9a7f-258ebec21703/10
SOCIAL SCIENCES
Introduction to Anthropology: https://assets.openstax.org/oscms-prodcms/media/documents/IntroductiontoAnthropology-WEB.pdf
Introduction to Sociology: https://assets.openstax.org/oscms-prodcms/media/documents/IntroductiontoSociology3e-WEB_9QTqRGQ.pdf
Introduction to Psychology: https://assets.openstax.org/oscms-prodcms/media/documents/Psychology2e_WEB.pdf
STATISTICS
Statistics: https://assets.openstax.org/oscms-prodcms/media/documents/Statistics-WEB.pdf
Introductory Business Statistics: https://assets.openstax.org/oscms-prodcms/media/documents/IntroductoryBusinessStatistics-OP.pdf