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Excelent video.

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How does math guide our ships at sea? - George Christoph

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I would give the information of my latitude and longitude. Or  mail address

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In Colombia the river navigation is the main thing. For this was not as necessary astronomy, only the lunar phases for the tides.

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Building inquiry activities for your class

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Building inquiry activities for your class

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https://www.youtube.com/watch?time_continue=471&v=E2zjNqmp0oc

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https://www.youtube.com/embed/udH3eK81XtM

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https://www.youtube.com/watch?v=ssw2fDN-7v4

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Constructing and using navigational instruments to measure angles. Sharing them in my blog. for example (sorry in spanish) https://astrofanaticos.wordpress.com/.../instrumentos.../

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Otras opiniones

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Other opinions

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I identify with the instruments, Because I use them as teaching tools to teach astronomy.

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An example of archaeoastronomy in my country

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An example of archaeoastronomy in my country

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knowing pre-colombus cultures as Muisca, Calima, Sinú; we learn from our origins. In this case the students. In this blog we share some cosmovisions of america. https://circulosolar.wordpress.com/

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Picture of Ursa Major and Polaris (indicated with green laser.

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We notice how the big bear revolves around the polar star(polaris), as time passes. My ubication is 6,16° north.

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My ancient observatory

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Some instruments that I build and that I use as tools for the teaching of astronomy.

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My name is Alvaro Jose Cano Mejia. Founder of the group Astrofanáticos. I work the didactic astronomy, with teachers and students. Write informative and educational articles in my blog: https://astrofanaticos.wordpress.com/

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El curso.

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Pregunta de la semana