- About.com Unit Studies - Articles and ideas for unit studies.
- Acorn Academy - Linked unit study directory and collected resources.
- Discovery Channel School - Educational resource page with unit studies tied into Discovery channel programming.
- GeoDeo Educational Resources - Offers resource books, coloring books, coloring and fun pages books, videos, science and art supplies, teacher’s manual,and games targeted to specific topics.
- Home2Teach - Free unit studies.
- Homeschool and More - Provides educational products, articles about homeschooling, and a calendar of events.
- In the Hands of a Child - Encourages the use of Project Packs to display and review completed unit studies. Sells resources to help you get started.
- Johnston Family Enterprises - Unit studies about creation science and music.
- Learn How To Speak - Reseller of language programs.
- Let's Study Birds! - Multi-sensory thematic study on birds for students 7 to 14.
- Links - List of unit study resources.
- Peg's Unit Study Planning Page - A detailed how-to on developing your own Unit Studies. Includes checklist and information on learning styles.
- Pimsleur Language Programs - Sells products that teach you foreign languages in your home or car.
- The Christian Homeschool Journal - Homeschool site with stories of families' experiences and relevant articles.
- Unit Study Helps - Message board, FAQs, and a homeschooling newsletter by e-mail.
- Unit Study Organization - Homeschooling mother's method of organizing her unit.
