Physical vs. Virtual manipulatives in the high school classroomMar 2016 ⋅ opal-e-724 ⋅ se/matheducators ⋅ #secondary-education #reference-request #manipulatives #geometry
Phrasing the Van Hiele levels in student-friendly languageJan 2016 ⋅ opal-e-724 ⋅ se/matheducators ⋅ #secondary-education #language-use #geometry