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OpenStax: Textbooks
OpenStax offers free textbooks to all types of students, making education accessible and affordable for everyone.
You will find books on the topics:- bookkeeping;
- economy;
- management and marketing;
- nursing;
- Sciences;
- human Sciences;
- math; …
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Music Masterclasses: Complete method piano and music theory
Complete music methods are offered on the Music Masterclasses website. It is a combination of free and paying lessons. An overview of all courses can be found here .
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Website -
Body Worlds: Questions when visiting the exhibition
The emphasis in this assignment is on systems, organs and diseases. Students take the requested photos and name the associated systems. This is followed by all kinds of questions, the answers to which can be found in the exhibition, such as about …
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Climate quiz - Biologie voor analisten
The climate is changing. The temperature on Earth is rising. This is due to the increase in greenhouse gases in the air. Climate change has major consequences for people, nature and the environment.
Test your knowledge about climate change with 10 …
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AI: Test whether you can recognize the machine translations!
Did you know that we often encounter machine translations online and in everyday life? Thanks to artificial intelligence, these translations are becoming increasingly difficult to distinguish from translations made by humans. But there are still …
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Interactive exercise -
Building the Heart: Exercise - BIOgenie+ 1
In this interactive picture you study the parts of the heart.
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Ear training: Replaying played notes on the keyboard
In this online exercise on musictheory.net you are supposed to play the note played on the keyboard. You also get the chance to play the reference note (the do) each time to help you.
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Recognize the keyboard: Agree
In this online exercise on musictheory.net you are supposed to click on the correct name of the chord with the note image on the piano. You can choose from:
- a major triad ( major triad );
- a minor triad ( minor triad );
- an augmented triad ( …
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Recognizing the keyboard: Scale
In this online exercise on musictheory.net you are supposed to choose the correct name of the scale for the scale you see on the piano. You can choose from:
- big;
- harmonic minor scale;
- natural minor scale;
- melodic minor scale.
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Recognize the keyboard: Interval
With this exercise on musictheory.net you will learn to recognize the intervals using the piano keys. You have to link the correct name of the interval to the correct interval on the piano. The intervals covered are:
- a major second (M2) or a minor …
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Recognizing the keyboard: Piano key (2)
With this exercise on musictheory.net you will learn to link the correct piano keys or the correct note image on the piano to the correct note image on the staff.
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Recognizing the keyboard: Piano key (1)
With this exercise on musictheory.net you will learn to recognize the names of the piano keys. You have to link the correct letter name or the correct name of the musical note to the correct piano key.
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