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Builder's Lab / Week 10 / Thursday
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Week 10 · Keep It Cold

Thursday

Read the melt table
// A holder that keeps an ice cube from melting
⏱ about 20 min

Thursday: Read the Melt Table

Nova reads her notes. "Plain cup: all water at 40 minutes."

"Foil wrap: all water at 50 minutes."

Rocket smiles. "It helped, but just a little. We can improve it."

Raven unwraps the foil. "What do you notice? Only one thin layer."

TimePlain cup: still ice?Rocket foil wrap: still ice?
10 minutesYesYes
20 minutesYesYes
30 minutesYesYes
40 minutesNoYes
50 minutesNoNo

Read the table

Yes means there was still ice.

No means it was all water.

Find the first No in each column.

READ THE TABLE
  • Read the question.
  • Tap your answer.
When was the plain cup all water?
Which cube lasted longer?
ONE FAIR CHANGE
  • Read the question.
  • Tap your answer.
Which plan changes only one thing?
Engineer tip
Use the same cube size and the same spot again.
Race your new holder against a plain cup.
Draw your holder with one new layer.

Count by tens

Nova peeked every 10 minutes.

10, 20, 30, 40, 50.

The foil cube lasted 10 minutes longer than the plain cup.

MELT DETECTIVE
  • Read the question.
  • Tap your answer.
When was the foil cube all water?
How much longer did the foil cube last?
What did Raven notice about the foil?
IdeaTrue or false?
At 30 minutes, both cups still had ice.?
The plain cup lasted longer than the foil.?
The crew will add one new layer.?
WHY THIS EXERCISEReading the table tells us what to try next.
Try it
Read your own melt table.
Find the first No in each column.
Which cube lasted longer?

You read a whole results table!

Tomorrow, we test version 2.

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