Schorr, Maria, Kauan M. Calheiro, Maria M. Dullius, Marli T. Quartieri, and Italo G. Neide. " XLogo or Scratch: A comparison between the software to support the teaching of plane geometry in Elementary School." Proceedings of the 33rd Brazilian Symposium on Computers in Education, Manaus, 2022. SBC, 2022, pp.186-195.