Flip or Flop: Are Math Teachers Using Khan Academy as Envisionedby Sal Khan?
Crossref DOI link: https://doi.org/10.1007/s11528-015-0900-8
Published Online: 2015-10-15
Published Print: 2015-11
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Cargile, Lori A.
Harkness, Shelly Sheats
Text and Data Mining valid from 2015-10-15