Maths, one mission at a time.

Fourth Expedition helps children in Luxembourgish fundamental school build confidence in mental maths, tables, fractions and geometry through short, adaptive daily missions.

Start a mission

How it works

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Create a profile

Parents add a child with a nickname, birth year and cycle. Data is kept to the minimum.

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240 trilingual questions

Questions are available in French, German and English, aligned with cycle 4.1 and 4.2.

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Adaptive difficulty

Each mission picks the next question based on the child's readiness across four competencies.

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Streaks & progress

Kids earn XP, keep streaks and parents can follow 14-day progress from the parent portal.

Competencies

Calcul mental

Additions, subtractions, decompositions and mental strategies.

Tables & division

Multiplication tables, division facts and inverse operations.

Fractions & %

Fractions, percentages, decimals and proportion problems.

Géométrie & problèmes

Shapes, measures, word problems and logical reasoning.