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Kitchen 3-5 / Week 01 / Wednesday
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Week 01 · Clean Hands, Ready Kitchen

Wednesday

Kitchen Lab: The marker test
// Wash up, team up, read the card
⏱ about 15 min

Wednesday: Kitchen Lab: The Marker Test

Lizzy draws tiny dots on Bennie's paws with a washable marker. "These are pretend germs," she says.

"What do you notice if you wash for just five seconds?" Ferris asks.

Bennie washes fast. Some dots are still there, between his toes and near his claws!

Riley grins. "Here is a hint," he says. "Try the full 20 seconds next."

Your mission

The marker dots are pretend germs. They show where scrubbing reaches.

You will wash two ways and count the dots that stay.

Then you will know which spots need extra scrubbing.

  • A washable marker
  • Soap and a sink
  • A clean towel
  • A timer or a clock with a second hand
  • A pencil and paper
  • A grown-up helper
Safety first
Use only a washable marker.
Keep the marker away from your eyes and mouth.
Dry the floor if water splashes.
  1. Ask a grown-up to draw 10 small dots on one hand.
  2. Put dots on the back, between fingers and near the nails.
  3. Wash that hand with soap for just 5 seconds. Dry it.
  4. Count the dots that are left. Write the number down.
  5. Ask for 10 new dots on your other hand.
  6. Wash that hand with all five steps for 20 seconds. Dry it.
  7. Count the dots that are left. Write it down.
TestDots at the startDots leftWhere were they?
5-second wash10
20-second wash10

Copy this table on paper. Fill it in as you test.

MAKE A PREDICTION
  • Read the question.
  • Tap your answer.
Before you test, predict. Which wash will leave fewer dots?

Look at your results

Count the dots that each wash left behind.

Look at where the dots stayed. Those are the easy spots to miss.

That is why the steps say to lather the backs, between fingers and under nails.

Bennie had 10 dots. 6 came off. How many dots stayed?
Lizzy had 10 dots. 9 came off. How many dots stayed?
What we learnedTrue or false?
A longer scrub has more time to reach every spot.?
Dots near the nails were easy to miss.?
Marker dots are real germs.?
A good wash reaches between your fingers.?
WHY THIS EXERCISEA test shows us why each handwashing step matters.
After the short wash, where did most dots stay? Type one word.
WHY THIS EXERCISEKnowing the tricky spots helps you scrub them every time.

Great testing, scientist! Tomorrow you read your first real recipe card.

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