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Science Launch G2 / Week 03 / Thursday
4/6
Week 03 · The Right Stuff

Thursday

What makes a test fair
// Test which material is best for a job
⏱ about 15 min

Thursday: What makes a test fair

Rocket and Raven argue about the best sponge.

Rocket dunks his sponge for ten seconds.

Raven dunks hers for just one second.

"Mine soaked up more!" Rocket shouts.

"What do you notice about our test?" Raven asks.

Nova hums. "Hint: was everything the same?"

Change only one thing

In a fair test, you change only one thing.

Everything else stays the same.

If you change the material, keep the water the same.

Keep the time the same too.

Then you know the material made the difference.

FAIR OR NOT FAIR?
  • Read the question.
  • Tap your answer.
Rocket used ten seconds. Raven used one second. Is it fair?
Both cups got two spoons of water. Is that part fair?
A FAIR SPONGE TEST
  • Tap a card.
  • Then tap its spot.
1First
2Next
3Last
SentenceTrue or false?
A fair test changes only one thing.?
In a fair test, you can use different amounts of water.?
WHY THIS EXERCISESame water and same time keep the test fair.
KEEP IT FAIR
  • Read the question.
  • Tap your answer.
You test two sponges. What should stay the same?
How long did Rocket dunk his sponge?
In a fair test, how do you know what made the difference?
What is the last step of a fair sponge test?
SentenceTrue or false?
Everything else stays the same in a fair test.?
Rocket’s sponge test was fair.?
Keep the time the same for each material.?
A fair test helps us trust results.?
WHY THIS EXERCISEFair tests show what really made the difference.
Draw two sponges in a fair test with a timer.

Word Spot: city, earth, eyes

Here are new sight words.

Look at each word. Say it. Spell it.

City: C-I-T-Y.

Earth: E-A-R-T-H.

Eyes: E-Y-E-S.

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.
A ___ has many tall buildings.
Seeds grow in the ___ outside.
I see with my ___.

Fair and square! Tomorrow we look at materials chosen for real jobs.

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