KBruch
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KBruch eret lille program til at øve brøkregning. Det er en del af KDE Education Project. |
Hovedtræk
KBruch har fem forskellige øvelsestyper.
- - i denne øvelse skal du regne en given brøkopgave. Du skal angive tæller og nævner. Dette er hovedøvelsen. Du kan ændre øvelsens sværhedsgrad. Du kan bestemme om du vil regne opgaver med addition og subtraktion eller med multiplikation og division. Du kan også indstille antallet af brøker og den maksimale størrelse af nævneren.
- - i denne øvelse skal du sammenligne størrelsen af to givne brøker.
- - i denne øvelse skal du omskrive et givet tal til en brøk.
- - i denne øvelse skal du faktorisere et givet tal i dets primfaktorer. Faktorisering er vigtig, når du skal finde fællesnævneren for to brøker.
- - i denne øvelse skal du beregne nemme andele af tal givet som procenter.
Screenshots
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The main goal in learning mode is to make the parts of the inner ring and the outer ring have the same size. The corresponding fractions can be expanded using spin boxes. The learner can get advice reading the hint box on the right. |
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Here you can see the exercise Arithmetic. The user has to enter numerator and denominator. KBruch checks the result and gives a short note, if the user entered the result unreduced. |
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In this screenshot you can see the exercise Comparison. The user has to select the correct comparison sign and KBruch will check the result. |
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In this screenshot you can see the exercise Conversion. The user has to convert a given number into a fraction. He has to enter the result reduced. |
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In this screenshot you can see the exercise Factorize. The user has to enter all prime factors of the given number. |
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In this screenshot you can see the exercise Percentage. The user has to calculate parts of a number. The numbers are that easy so that no pocket calculator should be necessary. |