Streak · 7 days+185 XP
7-Day Paper Fan Fold Streak
Fold a simple pleated paper fan each day using scrap paper, trying a new size or pattern. Check in once a day.
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Science · Facts & stats · iChallenge network
The Fan Challenge
Daily facts and stats about fans and moving air, plus real challenges to put them to work.
Warm-up questionNot ranked · tap an answer
The chilling effect of moving air on skin is related to which weather term?
Wind chill describes how moving air makes it feel colder by removing heat from skin faster.
Level1Rookie
XPPlay a round to earn XP
Streak0days
LeagueBronzeweekly
Daily #6Resets at midnight UTC
Today's round
- 5 questions
- 20s each
- 0 played today
One ranked attempt per day. Practice as much as you like.
Challenges
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Proof+250 XP
Pinwheel Airflow Test
Make a paper pinwheel and test how it spins near a fan or in a breeze. Post a short write-up of what you found.
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Streak · 10 days+200 XP
10-Day Draft Detective Streak
Each day, find one spot at home where air moves, like a door gap or vent, using a tissue strip. Check in daily.
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Proof+250 XP
Label a Fan
Sketch a household fan and label its blades, motor, guard and switch. Post a photo link of your drawing.
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By the numbers
Live counts from FanChallenge.net. All arena stats →
Facts in the pack12
Visitors, 30 days14
Leaderboard
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Badges
Earned on any arena, shown on your profile everywhere.
First RoundFinish your first daily round.
FlawlessAnswer every question in a round correctly.
LightningA perfect round in under 25 seconds.
On a RollPlay 3 days in a row.
Week WarriorPlay 7 days in a row.
UnbreakablePlay 30 days in a row.
ExplorerPlay daily rounds in 5 different arenas.
GlobetrotterPlay daily rounds in 25 different arenas.
PolymathPlay daily rounds in 5 different topics.
In the ArenaJoin your first challenge.
FinisherComplete a challenge.
RecruiterInvite a friend who finishes a round.
CaptainInvite 5 friends who finish a round.
PodiumFinish a day in an arena's top 3.
ChallengerReach level 10.
Profile SavedSave your progress with an email.
Save your progress
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Put a prize on a challenge
Fund a prize on FanChallenge.net and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
- Pick the challenge and the prize
- We review entries before a funded prize is awarded
- You get finisher and engagement numbers after it closes
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Questions
How do I start?
Play today's quiz round, post your score, and start a streak.
What do I earn?
XP, levels, streaks and badges. Save your progress with an email and it follows you to every arena on the iChallenge network.
How does the daily round work?
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
How is my score calculated?
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.