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Science Launch G1 / Week 06 / Wednesday
3/6
Week 06 · Send a Signal

Wednesday

Investigation: Cup phone
// Talk far away with light and sound
⏱ about 15 min

Wednesday: Cup phone

Rocket ties two cups together with string.

He talks into a cup, but the string hangs loose.

Nova hints, "Try pulling it tight." Raven listens.

You need

  • Two paper cups
  • A long piece of string
  • A sharp pencil for a grown-up
  • Two paper clips
Safety first
A grown-up pokes the holes with the pencil.
Do not wrap string around necks or fingers.
Talk softly into the cup.

Steps

  1. A grown-up pokes a small hole in each cup bottom.
  2. Push the string ends through the holes.
  3. Tie each end to a paper clip inside the cup.
  4. Each person takes one cup.
  5. Walk apart until the string is tight.
  6. One talks into a cup. The other listens.
MAKE A PREDICTION
  • Read the question.
  • Tap your answer.
You talk into the cup. What will the string do?
Draw a model of your cup phone. Show the cups and string.
WHAT HAPPENED?
  • Read the question.
  • Tap your answer.
How did the sound get to the other cup?
Does a cup phone send light or sound?

Word Spot: even, such

Here are new sight words.

Look at each word. Say it. Spell it.

Even: E-V-E-N.

Such: S-U-C-H.

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.
Two and four are ___ numbers.
That was ___ a fun game.

You built a sound signal device!

Tomorrow you will design your own signal.

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