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Use trigonometry to determine whether solar eclipses on earth can be perfect.

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Construct the Solar System

Make an accurate diagram of the solar system and explore the concept of a grand conjunction.

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Stage: 4 and 5 Challenge Level: Challenge Level:1

What lengths do you know?

Look for similar triangles.

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.