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eChalk: Interactive exercises
eChalk is a commercial website. You'll find a collection of hands-on activities, games, animations, simulations and quizzes created with a strong focus on learning through fun.
The tools are specifically designed for classroom teaching and are ideal …Translated by
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Astronomy: Speed of Light
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- measure the speed of light;
- Lorentz transformation;
- arcsecond;
- light-year sunrise; …
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Astronomy: Calendar
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- calculation day of the week;
- modular arithmetic;
- perpetual calendar;
- week number; …
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Motivation: Engine for the future
In education we face the daily challenge of motivating young people. This can be done in various ways. On this website you will learn how to do this in a sustainable way, namely not only by punishing and rewarding, but by really giving young …
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Astronomy: Theory of Relativity
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- general relativity;
- special relativity.
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Astronomy: Space and Time
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions you will learn more about:
- absolute space;
- space time;
- string theory;
- curvature in spacetime.
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Astronomy: Extraterrestrial life
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions you will learn more about:
- extraterrestrial life;
- Kardashev scale;
- string theory;
- creationism;
- theory of evolution;
- intelligent …
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Astronomy: Concepts 4
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- ebb,
- emission line,
- photosphere,
- epicycles,
- gray nights,
- white nights,
- GZK limit,
- halo.
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Astronomy: Spaghettification
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- spaghettitification,
- spectral class,
- spectroscopic double stars,
- radiation wreath, …
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Astronomy: Scintillation
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions you will learn more about:
- scintillation,
- flashes of light,
- reflection,
- refraction waves.
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Astronomy: Torino scale
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions and fill-in exercises you will learn more about:
- Torino scale;
- near-Earth objects;
- detection;
- recent near-Earth objects.
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Astronomy: Big Bang 4
This digital exercise will help you learn more about astronomy. While completing the multiple choice questions you will learn more about:
- cosmic background radiation;
- COBE;
- WMAP;
- singularity;
- inflation and expansion;
- stars arise;
- dark matter;
- ...
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