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Website
Ducksters

Ducksters: Physics for Kids: Elementary Particles Quarks, Bosons, Leptons

For Students 1st - 9th
Kids learn about elementary particles in the science of physics such as quarks, bosons, fermions, leptons, photons, and gluons.
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eBook
Physics4kids

Physics4 Kids: Modern Physics: Looking at the Nucleus

For Students 6th - 8th
Explains basic information about the nucleus of an atom.