ACS Middle School Chemistry (6th to 8th)
This course is taught using a downloadable textbook.
Christian Liberty Nature Readers 1 and 2 (K to 3rd) C
The first two books in this series are reprints of books now available in the public domain. The first reader is Nature Stories for Young Readers: Animal Life. The second reader is Nature Readers: Sea-side and Way-side No. 1.
CK-12 (K to 12th)
Flexbook textbooks are available for kindergarten through 5th grade science. Middle school and high school Flexbooks offered are Earth Science, Life Science, Physical Science, Biology, Chemistry, Physics, and Astronomy.
CPO Science (6th to 8th)
Focus on Earth Science and Focus on Life Science textbook are available for download.
Easy Peasy All-in-One Homeschool (1st to 8th) C
Courses are taught using a variety of online sources. Courses offered are Zoology, Biology, Earth Science, and Chemistry/Physics. Each course is available at two different levels. Level L is for 1st through 4th grades and Level M is for is for 5th through 8th grades.
Easy Peasy All-in-One High School (9th to 12th) C
Courses are taught using a variety of online sources. Courses offered are Oceanography, Biology, Earth Science, Chemistry, Physics, and Forensics.
Handbook of Nature Study (K to 12th) C
This book is a guide for studying nature with children.
Houghton Mifflin Science (K to 6th)
Science concepts are taught with online textbooks.
Inquiry in Action (3rd to 8th)
This downloadable textbook teaches basic chemistry concepts, along with the process of scientific investigation.
Khan Academy (9th to 12th)
Lessons are taught using videos. Some courses also include online practice questions and tests. Courses include Physics, Cosmology & Astronomy, Chemistry, Organic Chemistry, Biology, and Health & Medicine. Several AP courses are also available.
McGraw-Hill Science (1st to 6th)
Each grade level of science is made up of three downloadable books: Interactive Textbook, Reading and Writing in Science, and Activity Lab Book. While these books were written for California public schools, they can be used by homeschoolers in any state.
Mr. Q’s Classic Science (1st to 6th)
Mr. Q’s Life Science student textbook and parent’s guide are both free to download. Other science courses are available for purchase.
MS Nucleus (K to 6th)
Online lesson plans, storybooks, slideshows, and activities are provided for each grade.
Mystery Science (K to 5th)
This website requires a paid membership, but they usually offer one year free for first-time users. Video lessons, handouts, lesson plans, and activity instructions are included for each topic.
Nature Study: A Pupil’s Text-book (2nd to 6th)
This book provides information for a year-long nature study including information, observation through discovery based questions, sketching, and composition.
Our Wonderful World (K to 6th) C
The DIY Homeschool has created units to go along with the free nature study eBook, Our Wonderful World. Each unit includes several activities and additional reading.