Other Resources

The spherical geometry is visualized here in GeoGebra. Click and drag the points outside the sphere to modify the shape.

Visuals for solar azimuth angle

These slides were used to generate some of the imagery for the instructional materials.

Results of first experiment

This experiment was first conducted on the spring equinox of 2025 between a school in the USA and a school in Germany. The results of that experiment and an analysis and discussion are presented in these slides.

This NOAA compass will account for magnetic declination on a mobile device.

This NOAA solar calculator will help you estimate the position and timing of solar noon on the equinox.

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