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Body Lab 3-5 / Week 11 / Thursday
4/6
Week 11 · Body Defenders

Thursday

Handwashing science
// Skin, tears, mucus and white blood cells
⏱ about 15 min

Thursday: Handwashing Science

Rocket sticks his hands under the tap, splashes twice and shakes them dry. "Done! Speed record!"

Raven checks the clock. "What do you notice? That took about three seconds."

Nova hovers by the soap. "Speed is great for races," she says. "Germs need a little more time."

Rocket laughs. "Okay, let's test a slower plan."

Why wash?

Washing your hands is one of the best ways to stop germs from spreading.

Your hands touch many things all day. Germs can ride from your hands to your mouth.

Soap and water wash germs away down the drain.

Five steps

  1. Wet your hands with clean, running water. Turn off the tap. Add soap.
  2. Lather by rubbing your hands together with the soap.
  3. Scrub for at least 20 seconds. Get the backs, between fingers and under nails.
  4. Rinse your hands well under clean, running water.
  5. Dry your hands with a clean towel or an air dryer.

How long is 20 seconds? Hum the birthday song two times.

PUT THE HANDWASHING STEPS IN ORDER
  • ?Scrub
  • ?Lather
  • ?Dry
  • ?Rinse
  • ?Wet
WHY THIS EXERCISEWet, lather, scrub, rinse and dry is the full handwashing plan.
How many seconds should you scrub? Type a number.
WHY THIS EXERCISEScrub for at least 20 seconds so soap can wash germs away.

When to wash

Wash your hands...Why?
Before eatingKeeps germs off your food
After using the toiletWashes away germs from the bathroom
After blowing your nose, coughing or sneezingKeeps germs from spreading
After touching an animalAnimals can carry germs
After touching garbageGarbage can carry germs
WASH TIME?
  • Read the question.
  • Tap your answer.
Raven just blew her nose. Is it time to wash?
Rocket is about to eat lunch. Is it time to wash?
Which part of hands do people often forget to scrub?
Try it
Wash your hands using all five steps.
Hum the birthday song twice while you scrub.
Did it feel longer than you expected?
Safety first
Use warm or cold water, never hot.
Keep soap away from your eyes.
Wipe up splashes so nobody slips.
StatementTrue or false?
Soap and water wash germs away.?
Three seconds of scrubbing is plenty.?
You should wash after touching garbage.?
Drying your hands is the last step.?
WHY THIS EXERCISEScrub at least 20 seconds, and wash at key times like after touching garbage.

Squeaky clean thinking! Tomorrow we put the whole defense team together.

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