N an informal lecture with pertinent points, explanatory diagrams, etc, shown on a blackboard 粉笔教学; 在黑板上画图说明的非正式的讲演 [美国英语]
The coach gave his team a chalk talk before the game.
教练在比赛前给队员们连写带画地讲解了一番。
SINCE the beginning of mass education, schools have relied on what is known in educational circles as “chalk and talk”.
自从大众教育兴起以来，学校教育的主要方式一直是所谓的“粉笔和说教（注入式教育）“。
If it succeeds, though, it will provide a model that could make chalk and talk redundant.
然而，如果它成功了，那它为我们提供一种替代“粉笔和说教”的教育模式。
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