Khan Academy: 2757 producten
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: Ecosystem biodiversity
Are all coral reefs the same? Each regional ecosystem has its own assemblage of species and each contributes uniquely to global biodiversit…
VideoGratis4 minuten
check_box_outline_blank
Organic chemistry: Resonance structure patterns
Examples showing how different types of bond configurations can be represented using resonance structures. Organic chemistry Sal and Jay co…
VideoGratis10 minuten
check_box_outline_blank
Biology: Anatomy of a skeletal muscle fiber
Understanding the structure of a muscle fiber. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to …
VideoGratis17 minuten
check_box_outline_blank
Biology: Silicon-based life
Could silicon play a role similar to carbon's in supporting life? Biology Life is beautiful! From atoms to cells, from genes to proteins, f…
VideoGratis7 minuten
check_box_outline_blank
Biology: Types of immune responses: Innate and adaptive, humoral vs. cell-mediated
Innate vs. adaptive immunity. Humoral adaptive immunity vs. cell-mediated adaptive immunity. Biology Life is beautiful! From atoms to cells…
VideoGratis8 minuten
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…
VideoGratis10 minuten
check_box_outline_blank
Biology: Interactions between populations
Learn about the many types of interspecific interactions: competition, predation, herbivory, symbiosis, parasitism, mutualism, commensalism…
VideoGratis8 minuten
check_box_outline_blank
Biology: The history of life on earth
Hank discusses the history of life on Earth (including major events such as oxygenation of the atmosphere and mass extinctions). Biology Li…
VideoGratis13 minuten
check_box_outline_blank
Chemistry: Plotting data for a first-order reaction
Example of graphing first-order rate data to see a linear relationship, and calculating rate constant k from the slope. Chemistry Did you k…
VideoGratis9 minuten
check_box_outline_blank
Cosmology and astronomy: Black holes
Black Holes Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-ben…
VideoGratis10 minuten
check_box_outline_blank
Chemistry: Bronsted-Lowry definition of acids and bases
Bronsted-Lowry definition of acids and bases. Conjugate acids and bases. Chemistry Did you know that everything is made out of chemicals? C…
VideoGratis9 minuten
check_box_outline_blank
Chemistry: Electronegativity
Defines electronegativity and compares to electron affinity. Explains group and period trends in electronegativity using atomic radii. Chem…
VideoGratis10 minuten
check_box_outline_blank
Organic chemistry: Organic chemistry naming examples 4
Organic chemistry naming examples 4 Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understan…
VideoGratis10 minuten
check_box_outline_blank
Organic chemistry: Bicyclic compounds
How to name bicyclic compounds. Numbering the chain and Identifying bridgehead carbons. Organic chemistry Sal and Jay cover topics covered …
VideoGratis11 minuten
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…
VideoGratis9