An informative speech is not a persuasive speech in disguise. You are not closing a sale. You are making one process, object, or event understandable.
Dokie's 300+ list repeats "history of X" until the page is a keyword farm. Pick a slice: how it works, how it changed, or what a beginner gets wrong.
- Narrow to a process, a comparison, or a "how it actually works." Avoid "everything about climate."
- One audience, one time box. A 6-minute talk supports about 4 facts, not 20.
- Source as you go: one primary source and two explainers beat 15 blogs.
- Structure: hook, definition, 3 chunks, recap. Do not save the definition for slide 8.
- Build the deck in GenPPT from your outline so each chunk is one slide.
How to pick
Ask: can I teach this without arguing that people should do something? If you keep slipping into "should," it is persuasive. Try debate topics instead.
Good tests:
- I can demo it or show one diagram
- I can name a misconception in one sentence
- I can find a number from a real agency or paper
School and everyday
- How noise-cancelling headphones cancel sound
- Why school start times fight teen circadian rhythms
- How a library decides what to buy
- What a credit score is made of
- How city recycling actually gets sorted
- Why airplanes dim lights for landing
- How closed captions are made
- What "organic" on a label legally means in the US
- How a 3D printer lays a part
- Why daylight saving time exists
- How QR codes store data
- What happens in the first 24 hours of a hurricane warning
- How public radio is funded
- Why bread goes stale
- How a bike lock is picked (and how to choose one)
- What a national park ranger's week looks like
- How subtitles differ from captions
- Why your phone battery dies in the cold
- How a voting machine is tested before election day
- What a food recall actually triggers in a warehouse
- How noise maps are made for cities
- Why trains have that smell
- How a thesaurus differs from a dictionary in NLP vs paper
- What "fair use" covers for a student video
- How a yearbook is printed
Science and health
- How mRNA vaccines teach cells
- What a clinical trial phase actually tests
- How insulin was discovered, in three beats
- Why we still use Fahrenheit in the US
- How a pulse oximeter can lie on darker skin
- What microplastics are and where they show up
- How CRISPR cuts DNA, without the hype slide
- Why concussion protocols changed in the last decade
- How a heat pump moves heat
- What "herd immunity" does and does not mean
- How GPS satellites keep time
- Why antibiotics do not treat viruses
- How a cochlear implant turns sound into signals
- What a carbon offset buys, in practice
- How blood types were found
- Why the moon looks larger on the horizon
- How a PCR test amplifies DNA
- What PFAS are doing in water systems
- How sleep stages cycle
- Why iodine is in table salt
- How a fusion experiment is scored
- What a placebo-controlled trial controls for
- How forest fire smoke travels
- Why bees dance
- How a pacemaker is implanted, at a high level
Work, money, and civic
- How an ACH transfer moves overnight
- What a 401(k) match actually costs the company
- How a FOIA request works
- What "at-will employment" means in your state
- How a term sheet is not a check
- What SOC 2 is (and is not)
- How congestion pricing cameras work
- What an ETF holds
- How a union ratification vote is run
- What a municipal bond funds
- How unemployment insurance is calculated, roughly
- What a NDAs can and cannot cover
- How a product goes from 510(k) to shelf (devices)
- What "open source license" families differ on
- How a newsroom decides a correction
- What a carbon border tariff tries to do
- How payroll withholding is split
- What a zoning variance hearing is
- How an RFP is scored
- What "accredited investor" means
- How a copyright small-claims case works
- What a stock split does to your shares
- How 911 call centers triage
- What a data retention policy is for
- How a company does a tabletop security drill
- What redlining maps still explain
- How a recall election is triggered
- What "net neutrality" fights were about
- How a wind farm gets connected to the grid
- What a livable wage calculation includes
- How a patent expires and what happens next
- What a clawback in exec pay is
- How ranked-choice ballots are counted
- What a fiscal year is vs a calendar year
- How a nonprofit's Form 990 is read
- What "conflict minerals" reporting covers
- How a city sets a speed camera fine
- What a reverse mortgage does to the house
- How an index fund stays cheap
- What "chain of custody" means in evidence
- How a public comment period works
- What a 1099 vs W-2 changes for the worker
- How a tariff hits a toaster's BOM
- What an environmental impact statement contains
- How a board's audit committee is supposed to work
- What "fair lending" exams look for
- How a domain name is registered
- What a kill fee in journalism is
- How a city compost program is priced
- What a slide deck is for in a status meeting (slide deck vs pitch deck)
6-slide outline
- Hook with a wrong common belief
- Definition in one sentence
- Chunk A (how it works)
- Chunk B (who is involved / a number)
- Chunk C (what people mix up)
- Recap in three bullets they can photograph
Time it with how many slides per minute. For a short slot, see 2-minute speech topics. For 10 minutes, 10-minute presentation topics.
Research path
For any topic: one primary source (agency, paper, statute), two explainers, one diagram you can redraw. If you cannot name the primary source, pick another topic.
Worked example: pulse oximeters and skin tone
- Hook: "The fingertip number can look fine while the patient is not."
- Definition: a pulse oximeter estimates oxygen from light through the finger.
- Chunk A: how red vs infrared absorption is converted to SpO2.
- Chunk B: FDA and journal evidence that darker skin can bias readings high.
- Chunk C: people mix this up with "the device is racist on purpose." The issue is calibration and testing sets.
- Recap: check with a blood gas when it matters; do not treat 92% as gospel.
Sources to start: FDA safety communications on pulse oximeters; a peer-reviewed accuracy study. Put the URLs in speaker notes.
History and culture (slice titles)
- How the printing press changed schoolbooks, not "the history of print"
- Why US road signs use that typeface
- How closed captions started as a decoder box
- Why we still say "cc" on email
- How a yearbook was printed in 1998 vs now
- What a 1950s kitchen radio was actually for
- How time zones were a railroad problem
- Why iodine went into salt
- How a public library decided what to ban, then unban
- What a newspaper correction looked like before the web
FAQ
What is a good informative speech topic? A process, a comparison, or a misconception you can teach without a "should."
What are easy informative speech topics? QR codes, why planes dim lights, how a credit score is built, how recycling is sorted in your city.
What works for students? Pick a slice you can diagram in one slide. Avoid "everything about climate."
How do I research in a week? Primary source + two explainers + one diagram. Stop collecting blogs.
Informative vs persuasive? If you keep saying people should change a law, it is a debate topic.
Paste the outline into GenPPT. Keep diagrams sparse. One process graphic beats five stock photos of science.
