This "hands-on" material on elementary particle physics
was collected on behalf of the European Particle Physics Outreach
for the yearly
International Particle Physics Masterclasses.
Comprising much more than just the masterclass exercises, it is
well suited for general reading and learning about how the universe
is built up from the basic constituents of matter and the forces
Please look at Authors,
to find the original Web Sites, their authors and the copyright
information. The translations of the material into 15 languages
was performed and organized by the Members
Please contact the Coordinators
of the "Hands on Particle Physics" Masterclasses for any
further questions about the event and this material collection.