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Cosmography: Stars
This digital exercise will help you learn more about stars. While completing the multiple choice questions and fill-in exercises you will learn more about:
- characteristics;
- spectral class;
- star formation;
- end of light stars;
- end of stars like the …
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Types of paint
In this learning resource you will see how paint is used as protection, as decoration, as signaling, in painting, and you will be introduced to the important types of paint.
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Natural coloring agents
A natural dye is a dye derived from plants, mushrooms or animals. They can be used for dyeing wool, textiles, hair and food. In this exercise you will become acquainted with different species and their origins. You will also see the link with E …
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Plastics: Examples
In this exercise you match the correct term with the correct description. Terms that are discussed include:
- nylon,
- polyethylene,
- synthetic resin,
- composite,
- carbon fiber,
- elastomer,
- ...
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The well monster: Sand artist tells story about poverty
Watch a movie in which a sand artist tells a story about the well monster (poverty). Afterwards you answer questions about the video.
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Interactive exercise (12)Teacher -
Connecting a hand wash basin: Virtual reality
In this virtual reality experience, you learn the skills to install pipes step by step for connecting a hand wash basin.
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Flame tests with tea light holders
Metal salts dissolved in methanol color beautifully in the flame. These are very simple
experiments that can also be carried out by students under supervision.Translated by
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Synthesis of gold colloids from electronic waste
In this article, we discuss the synthesis of starch stabilized gold colloids, starting from gold recovered from electronic waste. The recycled gold was cleaned with concentrated nitric acid and dissolved in aqua regia. After evaporating the acidic …
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Chemical Elements: Quizlet - ION 3
Exercise series to learn chemical elements and their symbol.
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Which tools belong to which profession?
Simple exercise to combine tools with a given subject in practical education.
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Chemical Bonding: Introductory Concepts
In this combination exercise you will practice some basic concepts about the chemical bond.
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Apollo - 50 years of the moon landing
Half a century ago, Neil Armstrong set foot on the moon. A total of twelve astronauts would be walking around on our nearest neighbor. The first moon landing kept the whole world glued to the TV set, the last flight received hardly any …
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