Cup Phones

IMG_7170

We learnt that when we get two cups and a really long piece of string and we put one of the cups on our ears and a second cup on our mouths, and one person listens and one person talks through it we could hear the person’s voice. In the olden days, this is how they made their phones.

What we discovered:

  • Foam cups didn’t work. Plastic cups worked better. 
  • The string vibrates when you talk. 
  • It only worked the string was taut. 


How to Make a Cup Phone 

Materials:

  • 2 plastic cups
  • 1 piece of string, about 2 metres
  • Pen
  • Pin

Steps:

  1. Make a hole at the bottom of the cups by poking with a pin and then a pen. If it doesn’t work you can use scissors (carefully!).
  2. Put the string through the hole and tie a knot or double knot so the knot is inside the cup. Put the other end of the string through the other cup and tie a knot so the knot is inside the cup.
  3. Hold your cups so that the string is taut (pull the string tight). One person puts the cup to their mouth and the other person puts it up to their ear. One person talks and one person listens.

We hope you enjoy playing with your new phone!

IMG_7167 

IMG_7168IMG_7169

 

31 thoughts on “Cup Phones

  1. Hi 2B,
    I remember making cup phones when I was in primary school (30 years ago!!). I wonder how many other parents made them!? Was it hard to hear the other person with so many people in class all trying to talk and listen at the same time!? (at least that’s what it looks like is happening in the photo!)
    It reminds me a little of something at the moth park…I think there are coloured flowers that you can talk to/listen to. Does anybody know what I mean? Do you know how your voice would travel from one flower to the other? I don’t think it would be string like in your cup phones!
    Are you enjoying learning about change?
    From,
    Amanda

    • Dear 2B

      We really like the ideas of the cup phones.

      Who came up with the ideas?

      From Liyana 2A, Chanelle 2D and David 2B

    • Dear Avraj,

      2B made the string cups because in the olden days people didn’t have any phones so someone invented cup phones and we made them to know how people communicated.

      How do you think they got the materials?

      From Daniela, Lola and nikitaJ

  2. Dear 2B

    Did those cups work whe you were using them?

    Can you pass them over so we can use them.

    From Bhavana,Nia and Yilkan

  3. Dear 2B

    Did those cups work when you were using them?

    Can you pass them over so we can use them.

    Bhavana,Nia and Yilkan

  4. Dear 2b

    How are you going with your reading

    How are you really doing with writing

    I hope your doing good in everything

    By Adriana Christina rian

  5. Dear 2B,
    We have learnt a lot of interesting facts about the olden days such as teachers hit children with a ruler, they had flip flaps on there desk and and girls couldn’t show there legs to boys .Why couldn’t they?

  6. Hi 2B
    I heard about your olden days things and I would like to know if you liked it.
    What was your favourite part of it and what exactly did you do?

    Hope to hear from you soon.
    From Zeane

    • Dear Zeane,

      I hope you like it in Queensland.
      We hope you love it there?

      We like thing link .

      From Kate 2B, Maryam 2D and Tanisha 2A.

  7. Sincerely willow,

    We really want to see your picture.

    Congratulations wilow were you surprised and happy?

    From Montanna 2D,Isabel 2B,Chritina 2C

  8. Dear Zeane,
    Nathan’s favourite part was the olden day school and he wore the dunse hat and Sebastian got the strap.
    Liam’s favourite was the olden day school as well.
    Jake favourite part was the games after the olden day school.
    What are you doing on your holiday?
    By Jake, Nathan and Liam

  9. Dear 2B

    We like how you used the cup phones with one to your ear and one to your mouth so you can hear and speak.

    Did you have fun and enjoy playing and making the cup phones?

    From Nia,Ayan,Nikita J and Addison

  10. Dear Zeane,
    Nathan’s favourite part was the olden day school and he wore the dunse hat and Sebastian got the strap.
    Liam’s favourite was the olden day school as well.
    Jake favourite part was the games after the olden day school.
    What are you doing on your holiday?
    From Jake, Nathan and Liam

  11. Hi 2B

    Could you hear through the fantastic Phones? (Did you hear your partners?)

    We were wondering if you can teach us to make these phones

    From Nia,Tanush,Ahmad

  12. Hi 2B
    It reminded me when I made the cup phone at school many many years ago. I had lots of fun in making it.
    Did you enjoy making it too?
    From Oilivia Armitage Grandmother.

  13. Hello kids in 2B,
    It reminds me when I first made the cup phone many years ago. We use to talk using the cup phones from one building to another building where my friend use to live.
    How many children still use the cup phones at home?
    From Olivia Armitage Grandfather (Nonno)

  14. Dear Olivia’s grandpa,

    We don’t use them at home but we do at school.

    What types of cups did you use?

    From, Jonty, Adrian, Jacinta and Deya.

Leave a Reply

Your email address will not be published.