Stories by Hans-Karl Eder

Hans-Karl Eder is a German mathematician, educator and author who also works as a MINT ambassador to get young people interested in mathematics, computer science, natural sciences and technology.

Illustration of a hand and multiple numbers against a purple background.

MathematicsOctober 15, 2024

Math Puzzle: Play Architect with These Houses of Cards

Can this house of cards be built?

Hans-Karl Eder

Illustration of a hand and multiple numbers against a purple background.

MathematicsSeptember 17, 2024

Math Puzzle: Find the Imposter Number

Can you find the number that doesn't belong?

Hans-Karl Eder