Wagnis
About points...
We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
About difficulty...
We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
Question
Solution
Short
Video
\(\LaTeX\)
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Exercise:
minipage.textwidth Ein Balken der Masse kg werde wie in der Abb. gezeigt auf eine Mauer gelegt. Welche Masse muss mindestens am Punkt A hin gelegt werden damit enumerate item der Balken von alleine hält item eine Person kg bis in die Mitte des Balkens und item die gleiche Person bis ganz nach vorne gehen kann. enumerate Tipp: Die Schwerkraft resp. Gewichtskraft des Balkens wirkt in der Mitte des Balkens. minipage minipage.textwidth center tikzpicturescale. % Wand draw line widthpt -- -- -; fill patternnorth east lines rectangle -.; fill patternnorth east lines . rectangle -; % Brett draw fillbrown . rectangle .; % Punkt A draw fillblack .. circle mm node left A; % Hilfslinien draw dashed . -- .; draw dashed . -- .; draw - . -- node above m .; draw dashed . -- -.; draw - - -- node below m -; tikzpicture center minipage
Solution:
Als Drehachse entfielt sich das Ende der Mauer zu nehmen also m von A entfernt. enumerate item Damit der Balken nicht von alleine umkippt gilt: m_ m kg .m myRarrow m_ apx .kg. item Damit der Balken mit Person in der Mitte nicht umkippt gilt: m_ m kg+kg .m myRarrow m_ apx kg. item Damit der Balken mit Person ganz aussen nicht umkippt gilt: m_ m kg .m +kg m myRarrow m_ apx kg. enumerate
minipage.textwidth Ein Balken der Masse kg werde wie in der Abb. gezeigt auf eine Mauer gelegt. Welche Masse muss mindestens am Punkt A hin gelegt werden damit enumerate item der Balken von alleine hält item eine Person kg bis in die Mitte des Balkens und item die gleiche Person bis ganz nach vorne gehen kann. enumerate Tipp: Die Schwerkraft resp. Gewichtskraft des Balkens wirkt in der Mitte des Balkens. minipage minipage.textwidth center tikzpicturescale. % Wand draw line widthpt -- -- -; fill patternnorth east lines rectangle -.; fill patternnorth east lines . rectangle -; % Brett draw fillbrown . rectangle .; % Punkt A draw fillblack .. circle mm node left A; % Hilfslinien draw dashed . -- .; draw dashed . -- .; draw - . -- node above m .; draw dashed . -- -.; draw - - -- node below m -; tikzpicture center minipage
Solution:
Als Drehachse entfielt sich das Ende der Mauer zu nehmen also m von A entfernt. enumerate item Damit der Balken nicht von alleine umkippt gilt: m_ m kg .m myRarrow m_ apx .kg. item Damit der Balken mit Person in der Mitte nicht umkippt gilt: m_ m kg+kg .m myRarrow m_ apx kg. item Damit der Balken mit Person ganz aussen nicht umkippt gilt: m_ m kg .m +kg m myRarrow m_ apx kg. enumerate
Meta Information
Exercise:
minipage.textwidth Ein Balken der Masse kg werde wie in der Abb. gezeigt auf eine Mauer gelegt. Welche Masse muss mindestens am Punkt A hin gelegt werden damit enumerate item der Balken von alleine hält item eine Person kg bis in die Mitte des Balkens und item die gleiche Person bis ganz nach vorne gehen kann. enumerate Tipp: Die Schwerkraft resp. Gewichtskraft des Balkens wirkt in der Mitte des Balkens. minipage minipage.textwidth center tikzpicturescale. % Wand draw line widthpt -- -- -; fill patternnorth east lines rectangle -.; fill patternnorth east lines . rectangle -; % Brett draw fillbrown . rectangle .; % Punkt A draw fillblack .. circle mm node left A; % Hilfslinien draw dashed . -- .; draw dashed . -- .; draw - . -- node above m .; draw dashed . -- -.; draw - - -- node below m -; tikzpicture center minipage
Solution:
Als Drehachse entfielt sich das Ende der Mauer zu nehmen also m von A entfernt. enumerate item Damit der Balken nicht von alleine umkippt gilt: m_ m kg .m myRarrow m_ apx .kg. item Damit der Balken mit Person in der Mitte nicht umkippt gilt: m_ m kg+kg .m myRarrow m_ apx kg. item Damit der Balken mit Person ganz aussen nicht umkippt gilt: m_ m kg .m +kg m myRarrow m_ apx kg. enumerate
minipage.textwidth Ein Balken der Masse kg werde wie in der Abb. gezeigt auf eine Mauer gelegt. Welche Masse muss mindestens am Punkt A hin gelegt werden damit enumerate item der Balken von alleine hält item eine Person kg bis in die Mitte des Balkens und item die gleiche Person bis ganz nach vorne gehen kann. enumerate Tipp: Die Schwerkraft resp. Gewichtskraft des Balkens wirkt in der Mitte des Balkens. minipage minipage.textwidth center tikzpicturescale. % Wand draw line widthpt -- -- -; fill patternnorth east lines rectangle -.; fill patternnorth east lines . rectangle -; % Brett draw fillbrown . rectangle .; % Punkt A draw fillblack .. circle mm node left A; % Hilfslinien draw dashed . -- .; draw dashed . -- .; draw - . -- node above m .; draw dashed . -- -.; draw - - -- node below m -; tikzpicture center minipage
Solution:
Als Drehachse entfielt sich das Ende der Mauer zu nehmen also m von A entfernt. enumerate item Damit der Balken nicht von alleine umkippt gilt: m_ m kg .m myRarrow m_ apx .kg. item Damit der Balken mit Person in der Mitte nicht umkippt gilt: m_ m kg+kg .m myRarrow m_ apx kg. item Damit der Balken mit Person ganz aussen nicht umkippt gilt: m_ m kg .m +kg m myRarrow m_ apx kg. enumerate
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