Maths Adventure Stories: The Mysterious City of El Numero Solve the Puzzles, Save the World! Potter, William Heftet / 2020 / Engelsk
Maths Adventure Stories: Infinity Squad to the Rescue Solve the Puzzles, Save the World! Potter, William Heftet / 2020 / Engelsk
Maths Adventure Stories: Haley Comet and the Calculon Crisis Solve the Puzzles, Save the World! Potter, William Heftet / 2020 / Engelsk
Maths Adventure Stories: The Mystery of the Division Dragon Solve the Puzzles, Save the World! Potter, William Heftet / 2020 / Engelsk
