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Speed Change: What About It?
This lesson explains what speed change actually means. Illustrations illustrate what happens when the size or direction of the speed vector changes. It also explains what type of change follows for certain resulting forces. You can use all …
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Downloadable resource (6)Teacher, Other -
Resulting Power: What About It?
This lesson shows how to draw the resulting force once you know all the forces acting on an object. Namely, multiple forces can act simultaneously on an object. To know what will happen to the object, we have to combine those forces into a …
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Drawing forces on an object: What About It?
This lesson discusses how to draw the forces that act on an object . In order to know what exactly will happen to an object when forces act on it, we first have to be able to draw all those acting forces on that object. Illustrations show how …
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Downloadable resource (7)Teacher, Other -
Normal strength and weight: What About It?
In this lesson about normal strength and weight, I explain with illustrations what these forces mean and in what situations they occur. You can use all illustrations for free in your own lessons. You can also download the lesson as a PDF file.
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Gravity: What About It?
In this lesson on gravity , we explain in an illustrated way what factors influence the magnitude of gravity and how you can calculate it. You can use all illustrations for free in your own lessons. You can also download the lesson as a PDF file by …
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Downloadable resource (6)Teacher, Other -
Adding vectors graphically: What about it?
In this tutorial I explain how vectors graphically together can be added through the rear-end method and the parallelogram method. Finally, I show by means of an illustration that the addition of vectors is commutative. You can use all illustrations …
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Vectorial greats: What about?
In this lesson, I explain how vectors can exist in the real world in the form of vector quantities. I give examples such as displacement, speed, force and acceleration, each with an illustration. Finally, I explain the difference between a …
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A vector: how about it?
In this lesson we generally explain what vectors are. We discuss the properties size, direction and sense of a vector and provide a clear illustration for each of these properties. You can use all illustrations for free in your own lessons. You can …
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Downloadable resource (6)Teacher, Other -
Imaging: What About?
This lesson explains imaging on the basis of various illustrations. The human eye and photo camera are used as examples, but not yet discussed technically. After the types of light beams are explained, the camera obscura is discussed with the …
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Downloadable resource (5)Teacher, Other -
Absorbing, reflecting and transmitting light: What about?
This lesson explains the absorption, reflection and transmission of light rays in an illustrative way. In addition to the directional reflection from mirrors and the absorption of black objects, it is explained how a combination of diffuse …
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Moon phases and solar eclipse: What about?
This lesson explains in a very illustrative way how the moon phases and a solar eclipse occur. The last section of the lesson contains some compelling illustrations showing the actual scale of the Earth, Moon and Sun. You can use all illustrations …
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Shading: What about?
Using many illustrations, this lesson explains why opaque objects have a shadow, what the shape is of that shadow and how you can draw the shadow yourself. The lesson provides a slightly more in-depth explanation of the origin of the shadow than …
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