Immediate result: Any concept explained for a 10-year-old, a student and an expert, with an analogy and a check question.
Problem it solvesExplanations are pitched too high or too low for the person asking.
Compound interest
Simple: like a snowball rolling downhill — it picks up more snow because it's already bigger.
Student: interest is calculated on the principal plus interest already earned: A = P(1 + r/n)^(nt).
Check: ₹1,000 at 10% a year for 2 years — ₹1,210, not ₹1,200.
Explanations are often pitched too high or too low for the person asking. This skill explains any concept three ways: simply, with an everyday analogy; at student level, with the key terms; and at expert level, with nuance and limitations. Each level comes with a check question and answer, plus the most common misconception. It's useful for teachers preparing lessons, students revising, and anyone who needs to explain a technical idea to a mixed audience. To use it, paste the skill into your assistant and send the concept you want explained; the reply is laid out as “Simple”, “Student” and “Expert”.
# Skill: Explain at three levels
You are running the "Explain at three levels" skill for me. I work as: Teacher / learner. What I need from you: any concept explained for a 10-year-old, a student and an expert, with an analogy and a check question.
## When I send you the concept I want explained
1. Explain simply with an everyday analogy.
2. Explain at student level with the key terms.
3. Explain at expert level with nuance and limits.
4. Give one check question per level with the answer.
## Reply in this format
- Simple
- Student
- Expert
- Check questions and answers
- Common misconception
## Rules
- Use only the facts I give you; mark anything you had to assume with [ASSUMPTION].
- If something essential is missing, ask me one short question, then continue.
- No preamble or filler: start with the result.
Confirm you're ready in one line, then wait for me to send the concept I want explained.Then sendThe concept you want explained. For example: Compound interest
Upload it to Claude, add it to ChatGPT's Codex app, clone it into Claude Code, or download the SKILL.md for any agent. Full guide with screenshots →
Download the ZIP and upload it in Claude. Claude then uses the skill on its own whenever a request matches.
Download ZIP
OpenAI's Codex app reads the same SKILL.md format. Copy the skill into your Codex skills folder:
$ git -c http.version=HTTP/1.1 clone https://scienceofapps.com/skills/ai-skills.git
$ cp -r ai-skills/concept-explainer-levels ~/.codex/skills/
Clone the library and copy this skill into your Claude Code skills folder.
$ git -c http.version=HTTP/1.1 clone https://scienceofapps.com/skills/ai-skills.git
$ cp -r ai-skills/concept-explainer-levels ~/.claude/skills/~/.claude/skills/ for all projects, or .claude/skills/ inside one project.Download the skill file and put it in a folder named after the skill.
Download SKILL.md~/.claude/skills/concept-explainer-levels/SKILL.md.Repositoryscienceofapps.com/skills/ai-skills.git · all 200 skills, one folder each, plain git over HTTPS
Explanations are pitched too high or too low for the person asking. The skill fixes that: any concept explained for a 10-year-old, a student and an expert, with an analogy and a check question.
Copy the skill and paste it as the first message of a new chat, then send your input. To keep it, paste it into a ChatGPT Project or custom GPT, a Claude Project or a Gemini Gem, or upload the SKILL.md file as a Claude Skill.
Send the concept you want explained. If something essential is missing, the skill asks you one short question and then continues.
Yes. It's free to copy, use and adapt, with no sign-up, and works in the free versions of ChatGPT, Claude, Gemini and Copilot.
ProblemStudents cram unevenly before exams and run out of time for the hardest topics.
JEE Main in 40 days · weak: organic chemistry, rotational mechanics · 6 hours/day
Day 1: organic — GOC basics (3 h) · rotational — torque (2 h) · PYQs (1 h)
Revision: GOC again on days 2, 4 and 8
Days 34–40: full mocks every other day, buffer on day 37.
Immediate resultA day-by-day study plan with spaced revision, practice tests and buffer days.
ProblemMessages to parents about progress, behaviour or events can be misread or cause worry.
Student often not submitting homework for 3 weeks; want parent's support, not blame
'I'm writing because Aarav has submitted 2 of the last 9 homework tasks, and I'd like us to help him get back on track together.'
'In class he is engaged and asks good questions.'
'Could we speak for 10 minutes this week?'
Immediate resultA clear, kind message to parents with the facts, what the school is doing and how they can help.
ProblemWorkshops become slide lectures and nothing changes on the job.
3-hour in-person workshop on giving feedback, for new managers
Goal: new managers give one SBI-format piece of feedback each week.
0:40–1:30: paired role-play with real scenarios, rotate roles.
Follow-up: weekly 15-minute peer check-in for 4 weeks.
Immediate resultA workshop agenda with activities, timings, facilitator notes and a follow-up to make it stick.
All 10 education & training skillsAll 200 skillsRead it in the articleProve it: AI for Teachers and Educators Certification (free test)
60 research-backed principles in 6 categories — what each one means, why it works on the human brain and how to use it on your own screens. Written by Sushant Singh, founder of Science of Apps, who has scaled consumer apps to lacs of users and spent 10+ years leading product across startups and digital businesses in the US, EU & India.
110 real paywalls from top apps, taken apart, rated out of 5 and decoded with the Laws of UX — plus the frameworks, copy and checklists to ship your own. By Sushant Singh, founder of Science of Apps.