TED2011
AnnMarie Thomas: Hands-on science with squishy circuits
AnnMarie Thomas: Sains praktis dengan sirkuit lunak
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Dalam sebuah demo singkat di TED U, AnnMarie Thomas menunjukkan bagaimana dua rasa berbeda dari malam (lilin malam / "play dough") buatan sendiri dapat digunakan untuk menunjukkan sifat-sifat listrik -- dengan menyalakan LED, memutar motor, dan mengubah anak-anak kecil menjadi perancang sirkuit.
AnnMarie Thomas - Educator
AnnMarie Thomas works on the playful side of engineering -- using cool tools to teach and help others. Full bio
AnnMarie Thomas works on the playful side of engineering -- using cool tools to teach and help others. Full bio
Double-click the English transcript below to play the video.
00:15
I'm a huge believer in hands-on education.
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Saya sangat percaya pendidikan praktis.
00:19
But you have to have the right tools.
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Namun Anda harus memiliki alat yang tepat.
00:21
If I'm going to teach my daughter about electronics,
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Jika saya ingin mengajar putri saya tentang elektronika,
00:24
I'm not going to give her a soldering iron.
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saya tidak akan memberinya solder.
00:26
And similarly, she finds prototyping boards
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Demikian juga, jika dia mendapati bahwa papan prototip
00:28
really frustrating for her little hands.
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benar-benar membuat frustasi tangan kecilnya.
00:31
So my wonderful student Sam and I
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Jadi saya dan murid saya Sam
00:34
decided to look at the most tangible thing we could think of:
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memutuskan untuk melihat hal paling nyata yang bisa kami pikirkan,
00:36
Play-Doh.
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malam ("play dough").
00:38
And so we spent a summer
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Lalu kami menghabiskan musim panas
00:40
looking at different Play-Doh recipes.
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melihat resep-resep malam yang berbeda.
00:42
And these recipes probably look really familiar
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Dan resep-resep tersebut terlihat sangat lazim
00:44
to any of you who have made homemade play-dough --
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bagi Anda yang pernah membuat malam --
00:46
pretty standard ingredients you probably have in your kitchen.
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bahan yang cukup standar yang mungkin Anda miliki di dapur Anda.
00:49
We have two favorite recipes --
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Kami memiliki dua resep favorit --
00:51
one that has these ingredients
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pertama, yang terdiri dari bahan-bahan ini
00:53
and a second that had sugar instead of salt.
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dan yang kedua, yang mengandung gula, bukan garam.
00:55
And they're great. We can make great little sculptures with these.
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Ini luar biasa. Kita bisa bisa membuat karya seni kecil yang hebat dengan ini.
00:58
But the really cool thing about them is when we put them together.
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Namun yang benar-benar keren adalah ketika kita menempatkan malam ini bersama.
01:01
You see that really salty Play-Doh?
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Anda melihat bahwa malam yang mengandung garam
01:03
Well, it conducts electricity.
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menghantarkan listrik dengan baik.
01:05
And this is nothing new.
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Dan ini bukan hal yang baru.
01:07
It turns out that regular Play-Doh that you buy at the store conducts electricity,
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Ternyata malam yang Anda beli di toko dapat menghantarkan listrik,
01:09
and high school physics teachers have used that for years.
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dan guru fisika SMA telah menggunakannya selama bertahun-tahun.
01:12
But our homemade play-dough
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Namun malam buatan kita
01:14
actually has half the resistance of commercial Play-Doh.
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sebenarnya memiliki setengah resistensi dari malam di pasaran.
01:16
And that sugar dough?
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Dan malam gula itu?
01:18
Well it's 150 times more resistant to electric current
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150 kali lebih resisten terhadap arus listrik
01:20
than that salt dough.
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daripada malam garam.
01:22
So what does that mean?
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Jadi apa artinya?
01:24
Well it means if you them together you suddenly have circuits --
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Artinya jika Anda menggabungkan keduanya, Anda tiba-tiba memiliki sirkuit --
01:27
circuits that the most creative, tiny, little hands
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sirkuit paling kreatif, di mana tangan kecil anak-anak sekalipun
01:30
can build on their own.
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bisa membuatnya sendiri.
01:33
(Applause)
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(Tepuk tangan)
01:38
And so I want to do a little demo for you.
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Jadi saya ingin melakukan sedikit demo untuk Anda.
01:42
So if I take this salt dough,
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Jadi jika saya mengambil malam garam ini --
01:44
again, it's like the play-dough you probably made as kids,
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kembali, ini seperti malam yang mungkin Anda buat saat anak-anak --
01:46
and I plug it in --
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dan saya memasangnya--
01:48
it's a two-lead battery pack, simple battery pack,
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ini adalah pak baterai dua-timah, pak baterai sederhana --
01:51
you can buy them at Radio Shack
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anda bisa membelinya di Radio Shack
01:53
and pretty much anywhere else --
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dan cukup banyak ada di tempat lain --
01:55
we can actually then
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kita dapat benar-benar
01:58
light things up.
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menyalakan lampu.
02:02
But if any of you have studied electrical engineering,
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Namun jika ada di antara Anda telah mempelajari teknik elektro,
02:04
we can also create a short circuit.
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kita juga dapat membuat hubungan pendek.
02:06
If I push these together, the light turns off.
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Jika saya menekan ini bersamaan, lampu mati.
02:09
Right, the current wants to run through the play-dough, not through that LED.
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Benar, arus listrik mengalir melalui malam, bukan melalui LED tersebut.
02:11
If I separate them again, I have some light.
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Jika saya memisahkannya, lampu menyala.
02:13
Well now if I take that sugar dough,
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Sekarang saya ambil malam gula,
02:15
the sugar dough doesn't want to conduct electricity.
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malam gula tidak mau menghantarkan listrik.
02:17
It's like a wall to the electricity.
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Ini seperti dinding untuk listrik.
02:19
If I place that between, now all the dough is touching,
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Jika saya tempatkan di antaranya, sekarang semua malam bersentuhan,
02:22
but if I stick that light back in,
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tetapi jika saya memasang lampunya lagi,
02:24
I have light.
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lampu menyala.
02:26
In fact, I could even add some movement to my sculptures.
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Saya bahkan bisa menambah beberapa gerakan untuk karya seni saya.
02:29
If I want a spinning tail, let's grab a motor,
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Jika saya ingin sebuah ekor berputar, mari kita ambil motor,
02:31
put some play-dough on it, stick it on
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lletakkan beberapa malam di atasnya, tempelkan
02:34
and we have spinning.
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dan berputar.
02:36
(Applause)
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(Tepuk tangan)
02:40
And once you have the basics,
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Dan setelah Anda memahami dasarnya,
02:42
we can make a slightly more complicated circuit.
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kita bisa membuat sirkuit yang sedikit lebih rumit.
02:44
We call this our sushi circuit. It's very popular with kids.
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Kami menyebutnya sirkuit sushi. Ini sangat populer di kalangan anak-anak.
02:47
I plug in again the power to it.
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Saya memasang daya kembali ke dalamnya.
02:50
And now I can start talking about parallel and series circuits.
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Dan sekarang saya mulai berbicara tentang sirkuit rangkaian paralel dan seri.
02:53
I can start plugging in lots of lights.
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Saya bisa mulai memasang banyak lampu.
02:58
And we can start talking about things like electrical load.
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Dan kita bisa mulai berbicara tentang hal-hal seperti muatan listrik.
03:01
What happens if I put in lots of lights
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Apa yang terjadi jika saya memasang banyak lampu
03:03
and then add a motor?
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lalu menambahkan sebuah motor?
03:05
It'll dim.
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Ini akan redup.
03:07
We can even add microprocessors
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Kita bahkan bisa menambahkan mikroprosesor
03:10
and have this as an input
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dengan ini sebagai inputnya
03:12
and create squishy sound music that we've done.
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dan membuat musik lembut yang telah kita lakukan.
03:15
You could do parallel and series circuits
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Anda bisa mengajarkan sirkuit paralel dan seri
03:17
for kids using this.
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kepada anak-anak dengan menggunakan ini.
03:20
So this is all in your home kitchen.
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Jadi ini semua ada di dapur rumah Anda.
03:23
We've actually tried to turn it into an electrical engineering lab.
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Kami sebenarnya mencoba mengubahnya menjadi sebuah lab teknik elektro.
03:26
We have a website, it's all there. These are the home recipes.
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Kami memiliki situs, semua ada di sana. Ini adalah resep rumahan.
03:29
We've got some videos. You can make them yourselves.
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Kami memiliki beberapa video. Anda dapat membuatnya sendiri.
03:31
And it's been really fun since we put them up to see where these have gone.
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Dan ini sangat menyenangkan karena kami menunjukkan juga perkembangannya.
03:34
We've had a mom in Utah who used them with her kids,
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Ada seorang ibu di Utah yang telah menggunakan bersama anak-anaknya
03:36
to a science researcher in the U.K.,
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hingga peneliti sains di Inggris
03:38
and curriculum developers in Hawaii.
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dan pengembang kurikulum di Hawaii.
03:41
So I would encourage you all to grab some Play-Doh,
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Jadi saya mendorong Anda semua untuk mengambil beberapa malam,
03:43
grab some salt, grab some sugar and start playing.
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mengambil beberapa garam, gula dan mulailah bermain.
03:46
We don't usually think of our kitchen as an electrical engineering lab
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Kita biasanya tidak menganggap dapur kita sebagai lab teknik elektro
03:49
or little kids as circuit designers,
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atau anak-anak kita sebagai perancang sirkuit,
03:51
but maybe we should.
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tapi mungkin kita harus,
03:53
Have fun. Thank you.
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Bersenang-senanglah. Terima kasih.
03:55
(Applause)
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(Tepuk tangan)
ABOUT THE SPEAKER
AnnMarie Thomas - EducatorAnnMarie Thomas works on the playful side of engineering -- using cool tools to teach and help others.
Why you should listen
AnnMarie Thomas joined the faculty of the University of St. Thomas in the fall of 2006. Previously, she was a faculty member at Art Center College of Design. She is the director of the UST Design laboratory and leads a team of students looking at both the playful side of engineering (squishy circuits for students, the science of circus, toy design) and ways to use engineering design to help others (projects in technology design for older adults). Thomas, in partnership with collaborator Jan Hansen, is co-director of the University of St. Thomas Center for Pre-Collegiate Engineering Education (CPCEE).
Thomas teaches Engineering Graphics, Machine Design, Dynamics (with Circus Lab), Toy Design, Product Design for an Aging Population, and Brain Machine Interfaces (seminar). She organizes the School of Engineering Design Night (featuring the ENGR320 Machine Design competition), and the Design Discussions seminar series.
Thomas has also worked on underwater robotics (at MIT, Caltech and the Monterey Bay Aquarium Research Institute), specializing in biologically inspired propulsion. She has consulted on projects ranging from the design/creation of a "musical earthquake-playing robot" to the initial research for a book on earthquakes in Los Angeles. At Caltech, she founded the Caltech Robotics Outreach Group (CROG) and the Caltech/JPL/LEGO Middle School Robotics Conference.
Get the recipes for the two squishy circuits play doughs here >>
AnnMarie Thomas | Speaker | TED.com