LOGO booksDecember 22, 2021 visual modelingwith LOGO JamesClayson1988 learning mathematicsand logo Celia Hoyles Richard Noss1992 turtlegeometry Harold AblesonAndrea diSessa1981 advancedLOGO MichaelFriendly1988 other points of TURTOLOID interest:https://mitpress.mit.edu/series/exploring-with-logo/ Exploring Language: The Journey from Logo to Snap! Exploring language with Logo / E. Paul Goldenberg and Wallace Feurzeig