CDLA · Module 2 — Learning science for digital media

Pace the essential processing

Segmenting, pre-training, modality, worked examples and fading: manage essential processing without flooding experts.

About 22 min

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Sorting, matching, quizzes, and the module gate stay behind a free account so scored answers are not public. The teaching notes below are the same cited curriculum.

What this lesson covers

  1. 01

    Three levers for essential processing

    Mayer groups segmenting (d = 0.70), pre-training (d = 0.46) and modality (d = 0.72) as ways to manage essential processing: the work of making sense of the core material.

    Segment: Break the lesson into learner-paced parts. A six-step procedure is six screens the learner advances, not one 90-second animation that cannot be paused.

    Pre-train: Name the key terms and parts before the process. If the learner does not know "escrow" and "hold", the scenario spends load on vocabulary.

    Modality: For a complex graphic, spoken words often beat printed words because the eyes stay on the picture. This is not a reason to drop captions or readable interface text.

  2. 02

    Novices and experts need different help

    Novices: Worked examples and strong guidance help. · Fade support across attempts: full example, then completion problem, then open problem. · Pre-train names before the full process.

    Experts or high prior knowledge: The same worked example can hurt (expertise reversal). · Start with a problem; offer optional hints, not a forced lecture. · Skip pre-training they already own; let them test out.

  3. 03

    A fading sequence for one procedure

    Attempt 1, worked example: Every step shown with the reason for it. The learner predicts the next step before each reveal.

    Attempt 2, completion problem: The first half is done. The learner completes the second half and gets feedback on each step.

    Attempt 3, open problem: A new case with no steps shown. Feedback shows the consequence, then the expert path.

  4. 04

    Make the worked example do work

    Worked examples are one of the most reliable findings in cognitive load research, but learners often skim them. Two techniques prevent that. Self-explanation prompts: after a key step, ask "why was this step needed?" with a short choice or typed answer. Atkinson, Renkl and Merrill (2003) found that prompting learners to explain the principle behind each step improved transfer. Backward fading: remove the last step first, then the last two, so learners always start a problem with support and finish it alone. Write both into the storyboard; neither appears on its own.

  5. 05

    Fading is a design plan, not a hope

    If every screen stays fully guided, experts skim and novices never practise retrieval. Write the fade into the storyboard: which attempt shows what, and what triggers the learner to move to less support. A simple rule: two correct completion problems unlock the open problem.

  6. 06

    Write a fade

    For one procedure in your review module, write a three-attempt fading sequence with one self-explanation prompt. Add it to your design review as a proposed fix.