Playtime Compass LogoPlaytime Compass
Back to library
Toddler testing a scarf in front of an adult-controlled fan with other objects waiting in a tray.
ThinkingTest And CompareIndoor Open Floor Or Table Area

Wind Tunnel Exploration.

Make invisible air visible with a hand fan and a mix of light and heavy objects. Your child predicts what will move, then watches each object roll, fly, or stay still for hands-on cause-and-effect and comparison practice.

Play time
10-20+ min
Age
2-6 years
Energy
Medium
Mess
Low
Effort
Medium
Where
Indoor Open Floor Or Table Area
Start here

The recipe.

Medium parent effort
5 things

What you need

  • 1 adult-controlled wind source: hand fan, breath, straw, stable electric fan on low, wind tunnel, or box fan
  • 1 bin or tray
  • 5 or 6 test objects, mixing easy movers such as tissues, scarves, balloons, beach balls, or light fabric with harder movers such as stuffed animals or bean bags
  • Optional labels such as heavy, light, fast, slow, and float
  • Optional streamers, parachute material, appliance-sized cardboard box, or box fan for later extensions
10 min minimum

Setup

Then start the loop
Step 01
Choose a controllable wind source, such as a hand fan, straw, or your breath.
Step 02
Gather a mix of light and heavier objects, such as a tissue, small ball, and stuffed animal, in a tray.
"Wind test."
The loop

How play unfolds.

Sequence showing a child choosing an object, guessing what wind will do, testing it in airflow, and sorting the result.
  1. 01
    Have your child choose one object and predict whether the wind will move it.
  2. 02
    Place the object in the testing area and use the wind source to send air toward it.
  3. 03
    Watch whether it rolls, flies, or stays still, then place it in a tested pile.
  4. 04
    Repeat with another object and compare the results.

Safety Check

  • Keep electric fans and box fans under adult control, stable, and away from fingers, hair, loose fabric, and the child's face.
  • Remove small pieces, popped balloon bits, sharp objects, or anything your child tries to mouth.
  • Supervise straw or breath-powered testing so the child does not run, poke, chew, or share a straw.
  • Keep a clear landing path so heavier or moving objects do not hit the child, adult, fan, or fragile items.
Skill spotlight
Test And Compare

Cause and effect

This helps the child notice what changed, what stayed the same, and what to try next when something does not work the way they expected.

  • •Choosing one object and making a guess gives your child a clear cause-and-effect test.
  • •Watching what moves, rolls, floats, or stays still helps your child compare visible results.
  • •Resetting for another object makes trial and error feel like part of the game, not a mistake.
Real-world transfer
  • Noticing why one thing moves, rolls, or stays put during everyday play
  • Making a simple guess, checking it, and trying a new approach when needed
Supporting the play

What to say in the moment

Match what you say to what you see.

Prompt ladder
Level 1 (Start)
"Pick one thing for the wind to try."
Level 2 (Keep going)
"Watch closely and tell me what it does."
Level 3 (Stretch)
"Try the same thing from a new spot."
Level 4 (Extend)
"Can we make it move a different way?"
If your child seems...
What you'd see
Focused
What to do
Say
"You noticed it move."
Add
Ask one naming prompt about the result, such as "fast or slow?"
Extend
Let the child choose close wind or far wind for the next test.

Make it harder

Older end
  • +Let the child choose a close start or far start before testing.
  • +Test the same object twice and compare which try moved more.
  • +Sort tested objects by what they did, such as rolled, flew, floated, or stayed still.

If it's not working

If you see
If child ignores it
Use a scarf, tissue, or balloon first and make the wind move it dramatically before asking for a prediction.
If you see
If child misuses it
Pause the wind source, move the fan or straw back to adult control, and offer one object to test instead of the whole bin.
If you see
If child gets frustrated
Say, "Let's find one thing the wind can move," then test a tissue or scarf together.
Back to library
Keep playing

Related activities.