Have you ever wondered how many times a learner needs to revisit the same concept before it truly sinks in? According to large-scale research led by Koedinger et al., the sweet spot appears to be seven spaced activations. After about seven opportunities to retrieve or apply the same knowledge, learning tends to plateau. This insight has profound implications for how we plan lessons, review material, and build durable learning habits.

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"Atomic Habits" by James Clear is a popular book that provides valuable insights into the power of small habits and their impact on...