Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
Biology: The nitrogen cycle
How nitrogen is recycled in our biosphere in the nitrogen cycle, including nitrogen fixation. Biology Life is beautiful! From atoms to cell…
VideoFree6 minutes
check_box_outline_blank
High school biology: Example punnet square for sex-linked recessive trait
Example punnet square for sex-linked recessive trait High school biology Sex linkage Topic: Science Learn about all the sciences, from phys…
VideoFree5
check_box_outline_blank
Chemistry: Titration curves and acid-base indicators
Choosing the best indicator for different titrations depending on the pH at the equivalence point. Chemistry Did you know that everything i…
VideoFree7 minutes
check_box_outline_blank
Biology: Introduction to metabolism: Anabolism and catabolism
Overview of metabolism, anabolism, and catabolism. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations…
VideoFree10 minutes
check_box_outline_blank
Organic chemistry: Dot structures II: Multiple bonds
How to draw double and triple bonds using dots to represent valence electrons. Organic chemistry Sal and Jay cover topics covered in colleg…
VideoFree6 minutes
check_box_outline_blank
Biology: Hemoglobin
Hemoglobin and its role in the circulatory system. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations…
VideoFree15 minutes
check_box_outline_blank
Biology: Biological molecules - You are what you eat
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environm…
VideoFree14 minutes
check_box_outline_blank
Cosmology and astronomy: Radius of observable universe
Radius of Observable Universe Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn a…
VideoFree17 minutes
check_box_outline_blank
Cosmology and astronomy: Detectable civilizations in our galaxy 3
Reconciling with the traditional Drake Equation Cosmology and astronomy It's a great, big universe out there. In this section of Khan Acade…
VideoFree7 minutes
check_box_outline_blank
Biology: Biogeochemical cycles overview
Introduction to how water, carbon, nitrogen, and phosphorus are cycled through ecosystems. Biology Life is beautiful! From atoms to cells, …
VideoFree8 minutes
check_box_outline_blank
Organic chemistry: Ether naming and introduction
Ether naming and introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding …
VideoFree11 minutes
check_box_outline_blank
Chemistry: Introduction to kinetics
Kinetics is the study of reaction rates and how they are affected. Many factors, such as concentration, pressure, temperature, and enzyme a…
VideoFree15 minutes
check_box_outline_blank
Chemistry: Relationship between Ka and Kb
The relationship between Ka and Kb, and pKa and pKb. Examples of finding Ka of a weak acid given Kb of the conjugate base. Chemistry Did yo…
VideoFree11 minutes
check_box_outline_blank
Biology: Comparative anatomy: What makes us animals
Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolut…
VideoFree8 minutes
check_box_outline_blank
Biology: The skeletal system: It's ALIVE!
Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts…
VideoFree13 minutes