The Annotated Bibliography is a collection of curated links to research literature on AV topics.

The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-on-One Tutoring

TitleThe 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-on-One Tutoring
Publication TypeJournal Article
Year of Publication1984
AuthorsBloom, B. S.
JournalEducational Researcher
Volume13
Pagination4–16