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Triangle: Sum of angles
In this video it is shown by handicraft that the sum of the angles in a triangle is always 180 °.
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Sum angles in quadrilateral: Explanation video
In this video, it is shown by crafting that the sum of the angles in a quadrilateral is always 360 °.
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Bisector of an angle: Construction
This video demonstrates the construction of the angle bisector.
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Content measure conversion: Explanation video
Short video in which the conversion from mm³ to cm³, to dm³ and to m³ is presented graphically using a 3D sketch in Sketchup.
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Graphic design of a presentation: Video
In this video you will receive information and tips on how to properly design a presentation by using royalty-free images and the online photo editing program Photopea .
I made the presentation itself with Google Slides and royalty-free images that I …
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EF Core DB First with a SQL Server Database: Screencast
In this video you will learn how to create a SQL Server Database project, publish a SQL Server database and use that database in an ASP.NET Core web application in C #.
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Entity Framework Core Database First: Screencast
This video shows how to create a small web application with an underlying database using Visual Studio. First the database, then C # code to access the database. Some knowledge of SQL and C # is already required to get started.
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Extension methods in C #: Video
This video shows you an example of how to create extension methods in C #. In the video you will also learn how to use the extension methods. Unfortunately, the audio of this video was not recorded.
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Substitution method: Explanation video
In this video I explain how a 2x2 system can be solved with the substitution method.
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System Solving: Graphical Method
In this video I explain how the graphical method solves a 2x2 system. I use Geogebra for this.
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Solving systems: Equation method
In this video I explain how a 2x2 system can be solved with the equalization method.
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Combination method: Elaborated example exercises
In this video I will explain how to solve a 2x2 system with the combination method on the basis of 2 examples.
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