Worked Example First: Study One Solved Case Before You Try

In this Neuroscience Publication
You open the exercise set and start on question one, because that is what practice looks like. Ten minutes later you have crossed out two attempts and learned the method by trial. The faster route feels like cheating: read one solved case, line by line, until you can rebuild each step on blank paper. Then question one is your second pass through the method, not your first.

Worked Example First: Study One Solved Case Before You Try
How to Do It
Take one problem type you are about to practise, one fully solved example of that type, one blank sheet and a pen. The study pass takes about seven minutes, before you attempt anything.
Choose one problem type (10 seconds). Pick the single type you are about to practise. The problem shape is the unit here, not the chapter.
Read the question, cover the working (20 seconds). Read the question with the solution covered. Say what you are given and what you must find; if you cannot state both, read it again.
Read the solution one line at a time (2 minutes). Uncover the first line only; ask what changed and why, then the next. Reading the whole solution shows the answer and hides the method.
Name each move in your own words (1 minute). Beside each line write three or four words for the move: factor out, multiply both sides, substitute back. If you cannot name it, you read the algebra, not the method.
Rebuild it on blank paper (3 minutes). Close the example and rebuild the whole solution from the question alone. When you stall, look at the next line, close it and continue.
Attempt a fresh problem of the same type (the session). Now solve a new problem of the same structure with the example out of view. That attempt tests the study pass.
Score the gap (1 minute). Mark where your solution diverged from the example. Needed the page twice? Study a second example of the same type. Rebuilt it cleanly? Change type.

Worked Example First: Study One Solved Case Before You Try
The 5M2S Key Point
Study one solved case until you can rebuild it from blank paper, and your first attempt at a new problem becomes a second pass through the method instead of a first search for it.

Worked Example First: Study One Solved Case Before You Try
Origin
The practice comes from cognitive load theory. In 1985 John Sweller and Graham Cooper, then at the University of New South Wales, compared the usual sequence, principles, a few examples, then a large problem set, with a heavier use of worked examples whose solutions are written out in full.
Their argument was about attention, not speed. A problem you cannot yet solve sends you into a search for a route, and that search fills working memory, leaving little room to notice the pattern that makes the problem solvable. A worked example removes the search and shows the pattern step by step.
The UNOP library holds the guides around this one: the mind map that organises a chapter, the plain-words explanation that exposes a gap, the chunking that groups facts before you memorise them. This hack is the step before the exercises.
Companions: Declutter the Load clears the desk and the tabs; The Three-Branch Start maps a chapter before you read it; Name the Gap turns a failed explanation into the next question.

Worked Example First: Study One Solved Case Before You Try
Science-Backed
Three claims, each with the strength it actually carries.
First, studying a worked example produces faster and more accurate solving of similar problems than solving the same problems cold. Sweller and Cooper (1985) ran five experiments with school students. In Experiment 3, 22 Year 9 students worked on four algebra problem types. The worked-example group spent 32.0 seconds on the first attempt at each type; the conventional group spent 185.5 seconds. On the test problems that followed, the worked-example group averaged 43.6 seconds and 0.18 errors; the conventional group averaged 78.1 seconds and 1.64 errors. The difference in total test time was significant, U(11,11) = 27.5, p < .05. Strong support for a narrow claim, in algebra, in one short session.
Second, the advantage is specific to problems of the same structure. In Experiment 4 (40 Year 8 students) and Experiment 5 (24 Year 8 students matched on study time), worked examples helped on problems that kept the example's structure, and did not help when the same operations appeared in a different structure. In Experiment 5 the worked-example group studied a mean of 24.92 examples in the time the other group spent solving 8 problems, and still showed no advantage on the dissimilar set. One example buys one problem type, not the chapter; unfamiliar structures still need an attempt of your own.
Third, the benefit fades and can reverse as expertise grows. Kalyuga, Ayres, Chandler and Sweller (2003) reviewed studies in which guidance that helped beginners lost its effect, or became worse than no guidance, for learners who already knew the domain. The 2019 review by Sweller, van Merriënboer and Paas states the constraint plainly: worked examples are less effective for high-expertise learners, and a good example must not split attention or repeat information the learner already has.
What the evidence does not show: none of these studies tested this seven-minute routine on a university course, or measured a grade months later. The experiments used algebra with school students in single sessions; the reviews gather studies across many domains. The 2019 review also notes that example design matters, so a solution split across a diagram and a separate text block can lose the benefit. Once you can solve a problem type unaided, the example is furniture: drop it and solve.

Worked Example First: Study One Solved Case Before You Try
Sources
All sources below were opened and read on 11 November 2026.
Sweller & Cooper (1985). The use of worked examples as a substitute for problem solving in learning algebra. Cognition and Instruction, 2(1), 59-89. Full text read, Experiments 2 to 5.
Sweller, van Merriënboer & Paas (2019). Cognitive architecture and instructional design: 20 years later. Educational Psychology Review, 31(2), 261-292. Open access. Read the worked example, completion problem and guidance-fading sections.
Kalyuga, Ayres, Chandler & Sweller (2003). The expertise reversal effect. Educational Psychologist, 38(1), 23-31. Full text read.
Cognitive Load Theory guide. A guide to applying cognitive load theory to your teaching. Office of Educational Improvement, Medical College of Wisconsin, May 2022. Read from the class source set.
UNOP library. University 365 library index for the class. Holds the mind mapping and Feynman guides named in Origin.
A U365 5M2S Microlearning 5 MINUTES TO SUCCESS UNOP Neuro-Hack |
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