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Science Launch G2 / Week 03 / Wednesday
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Week 03 · The Right Stuff

Wednesday

Investigation: Rain coat test
// Test which material is best for a job
⏱ about 15 min

Wednesday: Rain coat test

Raven sets out four cups and four materials.

"We will test which one keeps water out," she says.

Rocket grabs the big water jug.

Nova flashes blue. "Hint: use the same water for each cup. Keep it fair."

Rocket nods. "Two spoons each. What do you notice?"

Your investigation

You will test which material makes the best rain coat.

  • four cups
  • four small squares of paper to put in the cups
  • a paper towel square
  • a piece of foil
  • a piece of plastic wrap or a plastic bag
  • a square of cloth
  • four rubber bands
  • a spoon and a cup of water
Safety first
Work on a tray or a towel to catch drips.
Wipe up spills so nobody slips.
Nothing goes in your mouth.
  1. Put one paper square in the bottom of each cup.
  2. Cover each cup with a different material.
  3. Hold each cover on with a rubber band.
  4. Pour two spoons of water on each cover.
  5. Wait one minute.
  6. Take off each cover. Check the paper inside.
MAKE A PREDICTION
  • Read the question.
  • Tap your answer.
Which cover do you predict will let water in?
Why do we use two spoons of water on every cup?
CoverPaper inside: dry or wet?Waterproof?
paper towel
foil
plastic wrap
cloth
After testingTrue or false?
A waterproof cover keeps the paper dry.?
The paper towel cover was waterproof.?
Every cup got the same amount of water.?
WHY THIS EXERCISEThe paper towel soaks up water and lets it through.
For a grown-up
Results can vary with how tight the covers are.
Ask your child what they would change to test again.
RAIN COAT TEST CHECK
  • Read the question.
  • Tap your answer.
Why put paper inside each cup?
What held each cover on?
How long did we wait before checking?
Which cover kept the paper dry?
SentenceTrue or false?
We tested four materials.?
Each cup got a different amount of water.?
Tight covers can change results.?
WHY THIS EXERCISEKeeping water and time the same makes a fair test.

Word Spot: never, started

Here are new sight words.

Look at each word. Say it. Spell it.

Never: N-E-V-E-R.

Started: S-T-A-R-T-E-D.

FIND THE WORD
  • Listen to the word.
  • Tap it.
Find the word you hear.
Find the word you hear.
Find the word you hear.
Find the word you hear.
FILL THE GAP
  • Listen to the sentence.
  • Tap the missing word.
I ___ give up.
The rain ___ after lunch.

Amazing testing! Tomorrow we learn more about fair tests.

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