Stufen 11 bis 13
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Leiterspiel
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Nachrichten-Netz
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Neues Haus
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Sierpinski
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Unterscheidung
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Digitale Bäume
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Durch den Tunnel
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Passwörter
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Turniersieger
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Zahlenmaschine
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Biber Parcours
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Flaggenbilder
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Nim
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Prüfbiber
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Rückseite
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