WordNet (r) 3.0 (2006):

chalk talk
    n 1: a talk that uses a blackboard and chalk

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "chalk talk":
   address, after-dinner speech, allocution, assignment, debate,
   declamation, diatribe, discourse, disquisition, eulogy, exercise,
   exhortation, exposition, filibuster, forensic, forensic address,
   formal speech, funeral oration, harangue, homework, homily,
   hortatory address, inaugural, inaugural address, instruction,
   invective, jeremiad, lecture, lecture-demonstration, lesson, moral,
   moral lesson, morality, moralization, object lesson, oration,
   pep talk, peroration, philippic, pitch, preachment,
   prepared speech, prepared text, public speech, reading, recital,
   recitation, sales talk, salutatory, salutatory address, say,
   screed, sermon, set speech, set task, skull session, speech,
   speechification, speeching, talk, talkathon, task, teaching,
   tirade, valediction, valedictory, valedictory address