Ancient Earth Globe
by Ian Webster
Interactive globe showing continental positions from 750 million years ago to the present, built on C.R. Scotese's PALEOMAP reconstructions with elevation and bathymetry shading. Positions are stated as accurate to roughly 100 kilometres. It converts the abstract claim 'continents move' into something a learner can manipulate in thirty seconds, and it credits its scientific source rather than obscuring it.
More resources on Plate Tectonics
Plate Tectonics: How It Works
Problem-based graduate text teaching the mathematics of plate motion: Euler poles, spherical trigonometry, finite and instantaneous rotations, magnetic anomaly dating and hotspot reference frames. Built around worked exercises rather than narrative explanation. Makes the learner actually compute plate motions - it collects the spherical trigonometry needed to read the primary tectonics literature.
Global Tectonics (3rd Edition)
Standard upper-undergraduate and graduate textbook covering plate kinematics, palaeomagnetism, marine magnetic anomalies, ocean ridges, subduction zones, continental collision, Precambrian tectonics and mantle convection. Presents the geophysical evidence quantitatively rather than stating conclusions.
GPlates
Open-source desktop software from the University of Sydney's EarthByte group for reconstructing plate motions through geological time. Handles vector, raster and volume data, computes plate velocities and seafloor spreading rates, and ships with a Python library, pyGPlates. The step from reading about plate motion to computing it.
IRIS / EarthScope Animations and Videos
Searchable collection of short animations from the EarthScope Consortium's NSF seismological facility, illustrating plate boundary mechanics, seafloor spreading, subduction geometry, 200 million years of plate motion, and the seismic observations that constrain them. Plate tectonics is a fundamentally geometric subject and these animations are the best free visual explanations from a primary scientific facility.
An Introduction to Geology - Chapter 2: Plate Tectonics
Chapter two of a Creative Commons college introductory geology textbook from Salt Lake Community College. Covers Wegener's evidence, Earth's chemical and physical layers, the three plate boundary types, subduction, continental rifting, the Wilson cycle, and hotspots.