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: Community ecology II: Predators
Hank explores adaptations of predators, the evolutionary arms race between predators and prey, and various types of predation (including he…
VideoFree10 minutes
check_box_outline_blank
Biology: Ape clarification
Ape clarification - that they have no tails. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ec…
VideoFree1 minute
check_box_outline_blank
Biology: Interphase
Interphase of the cell cycle, including G₁, S, and G₂ phases. How the cell replicates its DNA before mitosis. Biology Life is beautiful! Fr…
VideoFree8 minutes
check_box_outline_blank
Cosmology and astronomy: How Earth's tilt causes seasons
How Earth's tilt causes seasons Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn…
VideoFree21 minutes
check_box_outline_blank
High school biology: Structure of the nervous system
High school biology The nervous and endocrine systems Topic: Science Learn about all the sciences, from physics, chemistry and biology, to …
VideoFree9 minutes
check_box_outline_blank
Cosmology and astronomy: Hubble image of galaxies
Hubble Image of Galaxies Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about …
VideoFree4 minutes
check_box_outline_blank
Chemistry: Oxidizing and reducing agents
How to identify the oxidizing and reducing agents. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study …
VideoFree9 minutes
check_box_outline_blank
Biology: Photoperiodism
How plants can regulate processes like flowering based on day length (photoperiod). Biology Life is beautiful! From atoms to cells, from ge…
VideoFree8 minutes
check_box_outline_blank
Biology: Polymerase chain reaction (PCR)
Introduction to PCR (polymerase chain reaction). Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations t…
VideoFree10 minutes
check_box_outline_blank
Organic chemistry: Stereoisomers, enantiomers, and chirality centers
The definition of stereoisomers, enantiomers, and chirality centers. How to calculate the number of possible stereoisomers for a structure …
VideoFree5 minutes
check_box_outline_blank
Biology: Applying the Hardy-Weinberg equation
Using the Hardy-Weinberg equation to calculate allele and genotype frequencies. Biology Life is beautiful! From atoms to cells, from genes …
VideoFree6 minutes
check_box_outline_blank
High school biology: Meet the heart!
Find out exactly where the heart rests in your body and what it does. Rishi is a pediatric infectious disease physician and works at Khan A…
VideoFree10 minutes
check_box_outline_blank
High school biology: Impact of mutations on translation into amino acids
Using an amino acid translation table to understand the impact of point and frameshift mutations. High school biology DNA replication and p…
VideoFree9
check_box_outline_blank
Biology: Biodiversity flourishes in Phanerozoic eon
Cambrian explosion and biodiversity in the Phanerozoic Eon Biology Life is beautiful! From atoms to cells, from genes to proteins, from pop…
VideoFree10 minutes
check_box_outline_blank
Biology: Interactions between populations
Learn about the many types of interspecific interactions: competition, predation, herbivory, symbiosis, parasitism, mutualism, commensalism…
VideoFree8 minutes