All Science Courses
Hand-picked free courses from Khan Academy, CK-12, NASA, PhET, and National Geographic Kids — organized by grade.
Showing 8 courses for Grade 9
Chemistry
Chemical Reactions
Balance equations, explore acids and bases, and witness change.
Biology
High School Biology
Cells, evolution, and ecology — biology for budding scientists.
Earth & Space
Astronomy & Cosmology
Stars, galaxies, and the science of our place in the universe.
Biology
Biologie au Lycée
Cellules, évolution et écologie pour jeunes scientifiques.
Biology
जीव विज्ञान
कोशिकाएँ, आनुवंशिकी और जीवन की विविधता।
Biology
Biologie Oberstufe
Zellen, Genetik und Evolution für junge Wissenschaftler.
Biology
Biologia w Liceum
Komórki, ewolucja i ekologia dla młodych naukowców.
Earth & Space
Астрономія
Зорі, галактики і наше місце у Всесвіті.
Our learning partners
Cursor curates the best free science resources on the web. Every course links to its original home so credit — and learners — go to the educators making it possible.