Energiesparlampe
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
Applet
\(\LaTeX\)
Need help? Yes, please!
The following quantities appear in the problem:
Zeit \(t\) / Arbeit \(W\) / Energie \(E\) / Leistung \(P, \Phi\) / Anzahl \(N\) / Preis \(p\) / Spezifischer Preis \(\hat p\) /
The following formulas must be used to solve the exercise:
\(P = \dfrac{E}{t} = \dfrac{W}{t} = \dfrac{Q}{t} \quad \) \(p = N \cdot \hat p \quad \)
Der Stromzähler
Open in its own page
Exercise:
In einer Wohnung werden normale Glühlampen von jeweils W durch Energiesparlampen von W ersetzt. Jede Lampe brennt im Durchschnitt .h pro Tag. Wie gross ist die Einsparung in einem Jahr wenn eine Kilowattstunde Rappen kostet?
Solution:
NewQtyn NewQtyPW NewQtyPpW NewQtyth. NewQtyt.es NewQtyph.Rpperjoule % Geg n n P P P' Pp eta .hourperday th t y t hat p RpperkWh ph % GesPreisp siRp % Pro Jahr brennen die Lampen SolQtytpeta tthX*tXs al t' tpF th t tp. % Die eingesparte Energie in dieser Zeit beträgt SolQtyEnP-P'eta tnX*PX-PpX*tpXJ al E n P-P' t' EF n P - Pp th t E. Somit werden SolQtypn hat p P-P'eta tphX*EX/Fr al p hat p E pF ph E pP approx pP eingespart. % p pF pP
In einer Wohnung werden normale Glühlampen von jeweils W durch Energiesparlampen von W ersetzt. Jede Lampe brennt im Durchschnitt .h pro Tag. Wie gross ist die Einsparung in einem Jahr wenn eine Kilowattstunde Rappen kostet?
Solution:
NewQtyn NewQtyPW NewQtyPpW NewQtyth. NewQtyt.es NewQtyph.Rpperjoule % Geg n n P P P' Pp eta .hourperday th t y t hat p RpperkWh ph % GesPreisp siRp % Pro Jahr brennen die Lampen SolQtytpeta tthX*tXs al t' tpF th t tp. % Die eingesparte Energie in dieser Zeit beträgt SolQtyEnP-P'eta tnX*PX-PpX*tpXJ al E n P-P' t' EF n P - Pp th t E. Somit werden SolQtypn hat p P-P'eta tphX*EX/Fr al p hat p E pF ph E pP approx pP eingespart. % p pF pP
Meta Information
Exercise:
In einer Wohnung werden normale Glühlampen von jeweils W durch Energiesparlampen von W ersetzt. Jede Lampe brennt im Durchschnitt .h pro Tag. Wie gross ist die Einsparung in einem Jahr wenn eine Kilowattstunde Rappen kostet?
Solution:
NewQtyn NewQtyPW NewQtyPpW NewQtyth. NewQtyt.es NewQtyph.Rpperjoule % Geg n n P P P' Pp eta .hourperday th t y t hat p RpperkWh ph % GesPreisp siRp % Pro Jahr brennen die Lampen SolQtytpeta tthX*tXs al t' tpF th t tp. % Die eingesparte Energie in dieser Zeit beträgt SolQtyEnP-P'eta tnX*PX-PpX*tpXJ al E n P-P' t' EF n P - Pp th t E. Somit werden SolQtypn hat p P-P'eta tphX*EX/Fr al p hat p E pF ph E pP approx pP eingespart. % p pF pP
In einer Wohnung werden normale Glühlampen von jeweils W durch Energiesparlampen von W ersetzt. Jede Lampe brennt im Durchschnitt .h pro Tag. Wie gross ist die Einsparung in einem Jahr wenn eine Kilowattstunde Rappen kostet?
Solution:
NewQtyn NewQtyPW NewQtyPpW NewQtyth. NewQtyt.es NewQtyph.Rpperjoule % Geg n n P P P' Pp eta .hourperday th t y t hat p RpperkWh ph % GesPreisp siRp % Pro Jahr brennen die Lampen SolQtytpeta tthX*tXs al t' tpF th t tp. % Die eingesparte Energie in dieser Zeit beträgt SolQtyEnP-P'eta tnX*PX-PpX*tpXJ al E n P-P' t' EF n P - Pp th t E. Somit werden SolQtypn hat p P-P'eta tphX*EX/Fr al p hat p E pF ph E pP approx pP eingespart. % p pF pP
Contained in these collections
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Energiesparlampen by TeXercises
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Elektrische Leistung by aej
| Title | Matched on |
|---|---|
| Energiesparlampen | title |
| Energiesparlampen | title |
| Top oder Flop | tags |
| Alte Weihnachtsbeleuchtung in der Zürcher Bahnhofstrasse | tags |
| Stand-by | tags |
Similar exercises (11)
| Title | Matched on |
|---|---|
| Energiesparlampen | title |
| Energiesparlampen | title |
| Top oder Flop | tags |
| Alte Weihnachtsbeleuchtung in der Zürcher Bahnhofstrasse | tags |
| Stand-by | tags |
| Fön an Steckdose | tags |
| Diskussion um Strompreis | tags |
| Elektromobil | tags |
| Top oder Flop | tags |
| Neue Weihnachtsbeleuchtung | tags |
| Standby in Deutschland | tags |