- face equivalence
- face validity
- facts are illiterate
- fading
- false negative
- false positive
- Faraday, Michael
- ferrite does not like foreign atoms
- Feyerabend, Paul
- Feynman, Richard
- fieldnotes
- fish hope some of their eggs survive
- Fleck, Ludwik
- flipped learning
- Flood, Robert
- flowers are nature's gentlest children
- folk knowledge
- force will endevour to free its companions
- formal operations
- fossils are wrecks of nature
- fragmentation learning impediment
- Bartlett, Frederic C.
- fruit-body is the plant's genitals
- fulgurites are 'fossilized lightning'
- full shells explanatory principle
- functional groups find the right partners