. . "delightful mathematics computer game" . . . . "The distance game a delightful mathematics computer game"@en . . . "Problems and exercises"@en . . . . "Software"@en . . "Juvenile works"@en . "Builds students' mathematics knowledge in an enjoyable way."@en . "Mathematics computer game"@en . . . . . "The distance game" . . . . . . . . "Mathematics Learning." . .