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Lehrer Lämpel is an educational app that supports school children (usually 5rd grade) to practise their fraction addition and subtraction skills. The app is built-upon a state-of-the-art algorithm for diagnosing all student action and for providing targeted, situation-adaptive help. Pupils can ask Lehrer Lämpel for help at any time. A hint mechanism guides learners towards the next step, or points them to the source of the error. The app offers fractions with numbers that involve 1 or 2 digits. Lehrer Laempel supports two methods for combining fractions: "the least common multiple", or "any multiple". Optionally, a voice-over is available (male and female voice in English and French; female voice for German) that reads-aloud all help. Supports self-defined fraction addition/subtraction tasks and there is a work-sheet, and randomised exercises. Supports English, French and German. Available on the iPad, for iOS9 or later. The app is ad-free. No data is being collected. Please consider leaving a review. This helps a lot. Thanks!
