learning
345 postsHow Much of the Spacing Effect Survives in Real Courses: Classroom Meta-Analyses, Rereading a Week Later, STEM Course Experiments, and Personalized Scheduling
Spreading practice across days shows an effect of about d = 0.54 in a meta-analysis of real classroom studies, which its authors consider smaller than a meta-analysis that mixed in lab studies. Spacing embedded in mathematics courses (which also involves interleaving) is g = 0.24, and when eight university STEM courses used the same procedure, the gain averaged only 1.5 percentage points, with no detectable difference. Rereading a week later showed no detectable advantage a week after that, and none of the studies in that classroom meta-analysis let learners decide for themselves whether to come back and review.
Building Spaced Review into Teaching Articles: Quantum Country's Data, Online Course Experiments, and Why It Hasn't Caught On
The most complete attempt, Quantum Country, embedded 112 questions in an essay that takes about four hours to read and then emailed readers to schedule reviews. Its authors rate the evidence that readers would remember much less without review as only emerging, and say there is no evidence it generalizes to other domains. When a MOOC pushed review questions to learners, about 80% of those assigned never touched them, and grades showed no detectable difference; the example that worked was a classroom experiment where review was scheduled into class time.
Should a Teaching Article Explain Why It Matters or Add Fun Facts? Experiments on Stating Usefulness, Writing About Usefulness, Choice, and Irrelevant Details
Telling readers what something is good for makes them rate the material as more useful, but across seven experiments no difference was detected in immediate test scores; in classroom studies where students wrote about usefulness themselves, results flipped across students and courses. Interesting details unrelated to the main point lowered immediate test scores on average, by an uncertain amount; only one pair of experiments detected no harm when learning was voluntary.
Why Most Online Self-Learners Don't Finish: Evidence on Completion Rates, First-Week Dropout, Returning, and Planning Prompts
In HarvardX and MITx courses, about half of registrants on average never entered the course; among those who did enter, only 3.13% passed in 2017–18. A prompt to write a study plan raised completion from 13.8% to 17.7% in three courses, but at 247 courses no difference in completion was detected. These are all MOOC numbers; this site's traffic statistics are aggregate, with no data on individual readers' behavior.
When a Teaching Article Should Use a Diagram: Flows, Trees, Step-by-Step Traces, and Comparisons
Adding a graphic raises reading comprehension by about 0.39 standard deviations on average. Placing each diagram next to the text that explains it, and having readers do something with a diagram rather than just look at it, each have research behind them and cost less than drawing one more diagram, though no experiment compares them directly with adding a diagram; only one experiment isolated prediction, and it found no detectable difference. Use a state table for step-by-step execution, a numbered list for a single-path flow, and a table for comparisons. On a phone, a mermaid diagram with more than 3 nodes side by side in one rank shrinks until the text is unreadable.
Pairing a Teaching Article with Video: Placement, Timestamp Links, Length, and Self-Checks
Put a video at the top if it covers the whole article, at the start of a section if it covers only that section; videos at the bottom often get skipped. Readers mostly rewatch specific segments, so every section should link to its timestamp and the intro should state the video's length. Prequestions and writing your own explanation after each segment have experimental support, but those experiments all used short material, a little over 20 minutes at most.
Writing the Examples and Openings of a Teaching Article: Evidence on Worked Examples, Explanations, Learning Objectives, and Reader Level
Three practices have meta-analytic support: give readers a fully worked example, ask them to explain for themselves, and state a common misconception before refuting it. Questions before reading mainly help the content they ask about, and most experiments used math and science materials, short texts, and college students.
Writing Questions and Wording in a Teaching Article: Evidence on Inserted Questions, Feedback, Jargon, and Writing Specs
Asked content gains the most, according to research on classroom quizzes and prequestions (I found no synthesis of inserted questions themselves with a legally available full text), and feedback works better the more information it carries, though that evidence comes from classrooms, computer-based materials, and short laboratory texts. Readability formulas explain only a quarter to a third of teachers' difficulty judgments, and 30 Bloom verb lists disagree on where the same verb belongs.
When a Reader Wants the Video Mid-Article: Side by Side, Floating, or Scroll Back
Research interfaces share one move: keep the video and the matching text visible together, either beside the text or right at the passage being read. In the 16-person Papeos study, the condition with clips attached to passages had the lowest mean mental demand (the omnibus test across three conditions was significant). No experiment has compared layouts for a long written guide paired with a lecture recording, and no research I found says what to do on phones.
Talking While You Code in an Interview: Fourteen Sentences for Checking the Question, Explaining an Approach, Stating Complexity, and Testing Your Own Code
After hearing the question, say So you're looking for…? and ask Is the input array sorted? Start with The simplest solution is just…, then I think that would be quadratic. For two options: I could do this with…, or… When the code is written: Let me go through some examples to make sure this is correct. For asking for a hint when stuck, the sources give advice but no example sentence.
Handling Follow-up Questions in an Interview: Nine Sentences for Buying Time, Offering a Guess, and Admitting What You Have Not Used
When you need time: Let me think about that for a minute, or I'd like a few moments to collect my thoughts. When you can only guess: My guess is that… When you have not used something: I haven't worked with that library before, but I'd approach it by… After an answer you can ask Would you like more context? Google's interview prep page says plainly that asking for a few moments to collect your thoughts is okay.
What to Say in a System Design Interview: Twelve Sentences for Asking About Scale, Setting Scope, Stating Trade-offs, and Committing to a Decision
Open with How many users are there? and What is the expected read to write ratio? For a detail you are parking: I'm going to put a pin in that. For a cost: …but it will come at the cost of latency. After comparing, commit: I'm going to go with an event queue because I'd rather… After a section, ask Do you think that makes sense?
After AI lowers the skill barrier: understanding agency and practicing how to talk about taking action
Agency means believing you can change things and taking action. Read the guide, practice three continuous clips with original audio and source-player English captions, and describe a change you could make at work.
What Interview English Materials Teach and What They Leave Out: Thirteen Sentences for Openings, Three Parts of STAR, Questions to Ask, and Following Up
To open: I'm really excited to be speaking with you today. For responsibilities: I'm responsible for… For changing jobs: I'd like to apply my skills to a new challenge. In STAR, the Situation starts with In my current job, …, the Task with My job was to find a way of…, and the Result with Because of this, … If you missed the question: Sorry, can you repeat the question? For your own questions, ask about challenges, a typical day, and the next step in the process.
Does Shadowing Help You Speak? What a Review of 44 Studies Says, and Where Popular Claims Go Further
A 2025 review of 44 studies concludes that shadowing can improve the comprehensibility and fluency of your pronunciation. Most of those studies only tested controlled tasks such as reading aloud, and almost none compared shadowing with other techniques. Use it for rhythm, intonation, and smooth delivery. Building your own sentences and responding to people takes retelling, role play, and conversation.
Travel English Beyond Asking Directions: Sixteen Sentences for the Airport, Hotel, and Restaurant, Taken from Teaching Materials
At check-in: I have one bag to check in. Before a transfer: Do I have to pick up my bag in …? At the hotel: I have a reservation. For a room problem: I'm afraid there's a problem with…. To order: I'll have the…, and if it is sold out, Okay, I'll have the … then. For ingredients: Does it have any … in it? For the bill: Shall we split the bill? For directions: Could you tell me which way … is?
Workplace English Materials Don't Teach Stand-ups: Nineteen Sentences for Asking for Help, Checking Understanding, Disagreeing Politely, and Owning Mistakes
When you are stuck: Have you got a second to help me out? To ask for a second look: I think I need another pair of eyes on this. To check understanding: Can I just check that I've understood that right? When you are lost: I'm not sure I follow you. Before disagreeing: I see what you mean, but… When you got it wrong: That's on me. Before bad news: I need to give you a heads up. To chase progress: Have you had a chance to look at…?
English for a Climbing Trip: Asking About the Crag, Renting Gear, Finding a Partner, and Three Commands
Ask about sun with Does this wall get the sun…; drying time with How long does it take to dry…; rules with Do I need to register…; rentals with I'd like to rent…; length with long enough; partners with I'm looking for a climbing partner; routes with Can you recommend…. More rope is Slack!, less rope is Up rope!, and in a gym, asking the belayer to hold you and lower you from the top is Take!.
Talking About AI Agent Work in an English Interview: Positioning, Changing Requirements, Mistakes, and Design Principles
Positioning: I work on improving…, My work covers…. Changing requirements: changed five times in four months. Persuading with data: that convinced the team to…. A measured result: took 29 minutes. A mistake: I changed … but didn't update …, We only found out … after …. An honest gap: To be honest, we don't have … yet.