Experiment-first programs lead with doing — students start by observing, building, or testing before they encounter vocabulary and formal concepts. The idea is that children who have already held a magnet, mixed chemicals, or dissected a flower understand the textbook explanation at a deeper level because they've experienced the phenomenon firsthand.

This is the approach that best answers the most common question new homeschool parents ask about science: "How do I actually do science at home?" Programs in this group range from video-guided inquiry (Mystery Science poses a question, then guides an experiment) to physical kit subscriptions (MEL Science and KiwiCo ship materials to your door) to comprehensive experiment-driven curricula (R.E.A.L. Science Odyssey organizes full-year courses around hands-on investigation).

Living books programs teach science through real books — narrative nonfiction, field guides, and beautifully illustrated references — rather than textbooks. Rooted in the Charlotte Mason education tradition, this approach pairs reading with nature study: regular outdoor observation, nature journaling, and hands-on encounters with the natural world. The philosophy is that children who read about a real scientist's discoveries and observe nature firsthand develop a deeper relationship with science than those who memorize textbook definitions.

These programs tend to integrate well with other Charlotte Mason subjects (history through living books, narration, short focused lessons) and are especially popular for elementary science, where structured textbook work can feel premature. The trade-off is that these programs thin out at the high school level, where lab science and formal coursework become important for college preparation.

Note: AmblesideOnline is a free Charlotte Mason curriculum framework that recommends science books and nature study schedules but does not include its own lesson plans or experiments — think of it as a curated reading list rather than a packaged curriculum. It's included here because it's the most well-known Charlotte Mason resource and an excellent starting point for families interested in this approach.

Textbook programs provide the most familiar format: a text with chapters, review questions, vocabulary lists, and tests. Lesson plans are laid out clearly, and progress is easy to measure — making this the go-to approach for families who need grade-level assessments for state requirements, want predictable daily structure, or are coming from traditional schooling and want something recognizable.

This group has the strongest worldview divide of any science category. Six of seven programs are published by Christian companies — and the theological range matters. Apologia, Berean Builders (by Jay Wile), BJU Press, and Master Books teach from a young-earth creation perspective — the belief that God created the universe in six literal days roughly 6,000-10,000 years ago — and present this framework alongside their science content. Novare Science is also Christian but accepts mainstream scientific dating (old-earth), offering a distinct alternative for Christian families who don't hold a young-earth position. CK-12 is secular and fully aligned with Next Generation Science Standards (NGSS). If you're looking for secular textbook-style science, also check the Video & Online group below.

Unit study programs organize science around deep topical dives that integrate multiple subjects rather than marching through a textbook chapter by chapter. A unit on the human body might include reading a biography of a medical pioneer (history), sketching anatomical diagrams (art), calculating nutritional data (math), and dissecting a sheep's heart (science) — all in the same two-week period.

This approach is particularly popular with multi-age families because children of different ages can study the same topic at different depths. A unit on ecosystems works for a first-grader (nature walks, picture books, food chain diagrams) and a sixth-grader (research reports, data collection, ecosystem modeling) simultaneously. The trade-off is that unit studies require significant parent preparation and may not cover science topics as systematically as a dedicated science curriculum.

Video and online science programs deliver instruction through recorded or live video, often by subject-matter experts or engaging presenters. This is the fastest-growing category in homeschool science, driven by families who need independent learning options — either because the parent works, because they're not confident teaching science themselves, or because the child is old enough to benefit from expert instruction.

These programs vary in format: Generation Genius pairs short videos with hands-on activities for elementary and middle students. Khan Academy offers free video lessons with adaptive practice. Derek Owens provides recorded lectures with problem sets and instructor-graded assignments. Thinkwell delivers college-style video instruction. Wondrium offers documentary-quality courses on specialized topics. The common thread is that the screen does the teaching while the parent monitors progress.

Lab science programs address the question that keeps high school homeschool parents up at night: "How do I give my child a real lab science experience at home?" These are rigorous, college-prep courses that include actual laboratory work — not kitchen experiments with baking soda, but formal procedures with proper equipment, documented in lab reports that colleges will recognize.

This matters because college admissions offices expect to see lab science on transcripts, and many homeschool families discover in 9th or 10th grade that their general science program doesn't include a lab component. The programs in this group either ship lab equipment and provide instructor grading (Clover Valley Chemistry, Clover Creek Physics) or pair video instruction with structured lab experiments (DIVE Science layers video teaching on Saxon science textbooks). Axiom Science and Physics Prep offer specialized physics courses with lab components.