Back to the on-screen lesson ·
Read the evidence from a checked quiz or a prediction record, name what is going wrong, and choose the strategy that answers it.
Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.
You will diagnose what is going wrong from a checked attempt, choose the strategy that answers it, and put a week on three lines with a gap against each.
You now have a toolkit: retrieval, questions, spacing, schedules, interleaving, asking why, self-explanation, worked pairs, pictures with words, predictions and fluency checks. You also know how to get evidence about your own studying — a checked quiz, a prediction record. This lesson puts the two together: read the evidence, name the problem, pick the tool.
| Term | What it means |
|---|---|
| Diagnosis | Naming what is going wrong in your studying, from evidence such as a checked quiz, rather than from a feeling. |
| Evidence | Something produced and checked: a quiz score, a prediction beside a result, a blank page marked against the notes. |
| High utility | Dunlosky and colleagues' (2013) rating for practice testing and distributed practice: helpful across many learners, materials and tests. |
| Default | What to do when you have no evidence yet: retrieval, spaced out. |
| Week plan | A few lines, each with a day, the material, the strategy and the gap since that material was last studied. |
Every strategy in this course answers a particular problem. The mistake is to pick a favorite and use it for everything, or to pick by how a session feels. Instead, start from evidence and ask what exactly is failing?
Seven problems cover most of it. Forgetting over time — you knew it and now you do not — is answered by spacing. Can't produce it — you recognize the answer but cannot write it — by retrieval. Can't choose the method on a mixed test, by interleaving. Can't start from examples, by worked pairs with self-explanation. Facts don't connect, by asking why. Parts won't fit together, by a picture with words. Misjudging what you know, by predicting, then checking.
If you have no evidence yet, the default is retrieval, spaced across days — the two techniques rated high utility. It also produces the evidence you need for the next choice.
Another way: picture
Think of a mechanic who listens to the engine before reaching for a tool. The toolbox is full; the sound decides which tool comes out.
Another way: steps
Dunlosky and colleagues (2013) reviewed ten techniques students use. They rated two as high utility: practice testing and distributed practice. They rated three as moderate: interleaved practice, elaborative interrogation and self-explanation. They rated five as low, largely because the evidence was limited or benefits were small or narrow: summarization, highlighting, the keyword mnemonic, imagery for text, and rereading.
The IES practice guide (Pashler and colleagues, 2007) makes matching recommendations: space learning, interleave worked examples with problems, combine graphics with words, quiz to promote learning, help students judge what they know, and ask deep questions. A moderate rating does not mean second-best at everything. Interleaving is the answer to a choosing problem however it is rated; spacing will not fix that.
Most students already hold the evidence they need. A marked quiz tells you more than a score: look at each miss and ask what kind it was. I knew it when I saw it is a production miss. I used the wrong formula is a choosing miss. I had no idea how to start is a starting miss. I knew it last week is a forgetting miss. Count them. The largest group decides the first change you make this week.
A prediction record adds one more kind of evidence: a big gap between what you expected and what you got is its own problem, and it is answered by predicting and checking every time.
With twenty minutes, do one thing: a retrieval attempt on the weakest material from your last check, then read only what you missed. With no check to go on, try the questions most likely to appear. Skimming everything spreads the time over what you know already, and it feels productive because it is fluent.
The human skeleton has 206 bones in the typical adult, and a first anatomy course asks students to name many of them from a diagram or a model. A fictional student, Rosa, marks last Friday's practice quiz and sorts her 12 misses. Five were bones she had labeled correctly two weeks earlier and could not name now: forgetting over time. Four were terms she recognized when she saw them but could not write: can't produce. Three were places where she knew the names but could not say how the bones of the wrist fit together: parts won't fit.
Her week follows the evidence. Monday: a blank diagram of the arm and hand, labeled from memory (retrieval, on the forgotten bones — the largest group). Wednesday: the wrist drawn as a sketch with a line of words beside each bone. Saturday: a fresh blank diagram, with her predicted score written at the top before she starts. Three lines, three strategies, each chosen by a kind of miss.
"Just use the best strategy for everything." Retrieval and spacing are the safest default, but a choosing problem needs mixing and a starting problem needs worked pairs.
"Pick the strategy that feels most productive." Effective strategies often feel worse at the time (lesson 6). Pick by evidence.
"I'll figure out what's wrong by thinking about it." A checked attempt tells you; a feeling about a chapter does not.
"When in doubt, reread." Rereading answers none of the seven problems. When in doubt, retrieve.
Mark the quiz and list the misses.
Algebra quiz: 14 of 20; misses on 3, 5, 8, 11, 16, 19
Checked misses are the evidence; the score alone is not enough.
Ask what kind each miss was.
3, 8, 16: used the wrong method. 5, 11: knew once I saw it. 19: could not start.
The kind of miss, not the topic, decides the strategy.
Find the largest group.
Wrong method: 3 misses → can't choose the method
The biggest group is where a change will do the most.
Pick the strategy and put it on a day.
Tuesday: a mixed set of 12, naming each problem's kind first (interleaving)
Interleaving is what practices choosing; the others get a smaller slot.
Read the record.
Spanish verbs: predicted 9, got 5. Vocabulary: predicted 8, got 8. Culture reading: predicted 7, got 7 but slipping from last month's 9.
Two kinds of evidence: gaps, and drops across time.
Name each problem.
Verbs: misjudging and can't produce. Vocabulary: fine. Culture: forgetting over time.
Vocabulary needs no change, which frees time for the others.
Choose the strategies.
Verbs: retrieval with a written prediction. Culture: a spaced review.
Each problem gets the tool that answers it.
Write the week.
Mon: verbs, predict then retrieve. Thu: culture, spaced review (gap since last: 30 days). Sat: verbs again, gap 5.
Three lines, each with a strategy and a gap.
List the misses by kind.
Misses: 6. Knew once I saw it: 1. Wrong formula: 1. Could not start: 4.
The kinds of miss are the evidence.
Name the largest problem.
Could not start: 4 → can't start from examples
The biggest group decides the first change.
Choose the strategy and schedule it.
A fictional student has twenty minutes on the bus before a quiz on three topics. Yesterday's practice check showed topic B was her weakest. Which use of the twenty minutes fits?
A fictional student marks a 24-question practice test and gets 18 right. Looking at each miss, she finds 1 she recognized as soon as she saw the answer, and 1 where she knew the method but used it on the wrong kind of problem. The rest she could not start. Complete her worked diagnosis.
Count the misses.
24 − 18 = a misses
The diagnosis starts from checked misses, not from how the test felt.
Count the misses she could not start.
a − 1 − 1 = b could not start
Recognized-but-not-produced points to retrieval; wrong kind points to interleaving; what is left is a starting problem.
Let the largest group choose the first strategy.
Could not start: b → worked pairs with self-explanation first
The biggest group of misses is where a change of strategy will do the most this week.
Seven things that can go wrong in studying. Choose the strategy from this course that answers each.
| Strategy | |
|---|---|
| forgetting over time | |
| can't produce it | |
| can't choose the method | |
| can't start from examples | |
| facts don't connect | |
| parts won't fit together | |
| misjudging what I know |
Six pieces of evidence from fictional students' weeks. Diagnose what is going wrong in each.
| What is going wrong | |
|---|---|
| 9 of 10 on Monday, 4 of 10 two weeks later | |
| I knew that, once I saw the answer | |
| Aced each chapter, froze on the mixed review | |
| The example makes sense; can't start problem 5 | |
| Can list causes, can't say why they mattered | |
| Scored 12 points below my prediction |
A fictional student studied 10 hours last week. 7 of them were rereading and highlighting; the rest were retrieval and spaced review. She decides at least half her hours should be retrieval or spaced review. How many hours were retrieval last week, and how many rereading hours should she switch?
Retrieval hours last week: a
Hours to switch: b
A fictional adult is studying for a real-estate license exam while working full time. His evidence gives three problems. Build his three-line week: choose the strategy for each line and give the gap in days since the last session on that material.
| Strategy | Gap in days | |
|---|---|---|
| Monday: contract terms, 90 then 50 percent | ||
| Wednesday: financing, wrong formula on a mix | ||
| Saturday: property law, far below prediction |
Lesson test: one question per skill, one attempt each, no hints. Your answers are checked when you submit.
Four pieces of evidence from a fictional nursing-prerequisite student's anatomy course. For each, diagnose what is going wrong and choose the strategy.
| What is going wrong | Strategy | |
|---|---|---|
| Labeled the arm bones last week, couldn't today | ||
| Know the chamber names, not how blood moves | ||
| Recognized every term, got half wrong | ||
| Expected 85 percent, got 60 |
You can choose a strategy from evidence. Take your last marked quiz, sort the misses by kind, and let the largest group pick this week's first change. Next: better versions of highlighting, summarizing and rereading. You can stop in the middle of any of this. Closing the page is the whole of stopping — your place and anything you had typed are already saved, and the lesson opens again where you left it.
12. Your turn: a chemistry student's misses, step 3
Wednesday: two worked examples, each self-explained and paired with a problem
Worked pairs with self-explanation answer a starting problem.