Category Archives: Learning Leaflet

Hoot the Owl

A children’s book, The Story of How the Constellation ‘Hoot the Owl’ Began, was written and Illustrated by Anna Todd (2017), a 2nd grade student at Rose Witcher Elementary School, El Reno Public Schools, located in El Reno, Oklahoma. The … Continue reading

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Johann Schreck: Galileo’s Friend in China

How did knowledge spread in Galileo’s world? Johann Schreck joined the Jesuit order in 1611, the same year that he used Galileo’s telescope to observe the satellites of Jupiter. Upon becoming a Jesuit, Schreck joined the Jesuit mission in China, … Continue reading

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Books as Instruments

In this remarkable book, Regiomontanus predicted the positions of the Sun and Moon for 40 years. He designed a sundial to work independently of one︎’s latitude, and a volvelle, or circular dial, to locate the position and phase of the … Continue reading

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