Should we get rid of standardized testing? - Arlo Kempf

Da li bi trebalo da se rešimo standardizovanog testiranja? - Arlo Kempf

1,212,159 views

2017-09-19 ・ TED-Ed


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Should we get rid of standardized testing? - Arlo Kempf

Da li bi trebalo da se rešimo standardizovanog testiranja? - Arlo Kempf

1,212,159 views ・ 2017-09-19

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Milenka Okuka Lektor: Mile Živković
00:09
The first standardized tests that we know of
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Prva zabeležena standardizovana testiranja
00:12
were administered in China over 2,000 years ago
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su vršena u Kini pre 2000 godina
00:16
during the Han dynasty.
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za vreme dinastije Han.
00:18
Chinese officials used them to determine aptitude for various government posts.
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Kineski zvaničnici su ih koristili da utvrde spremnost za razne državne poslove.
00:23
The subject matter included philosophy,
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Bavili su se temama iz filozofije,
00:25
farming,
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zemljoradnje,
00:26
and even military tactics.
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pa čak i vojne taktike.
00:28
Standardized tests continued to be used around the world for the next two millennia,
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Standardizovani testovi su korišteni širom sveta naredna dva milenijuma,
00:33
and today, they're used for everything
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a danas se koriste za sve,
00:35
from evaluating stair climbs for firefighters in France
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od ocenjivanja penjanja uz stepenice vatrogasaca u Francuskoj,
00:39
to language examinations for diplomats in Canada
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preko ispita iz jezika za diplomate u Kanadi,
00:43
to students in schools.
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do đaka u školama.
00:45
Some standardized tests measure scores
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Neki standardizovani testovi mere rezultate
00:48
only in relation to the results of other test takers.
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jedino u odnosu na rezultate drugih koji su testirani.
00:51
Others measure performances on how well test takers meet predetermined criteria.
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Drugi mere učinak koliko dobro testirani susreću zadate kriterijume.
00:57
So the stair climb for the firefighter
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Dakle, penjanje uz stepenice za vatrogasce
00:59
could be measured by comparing the time of the climb
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može da se meri poređenjem vremena penjanja
01:02
to that of all other firefighters.
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sa vremenom svih ostalih vatrogasaca.
01:05
This might be expressed in what many call a bell curve.
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Ovo može da se izrazi nečim što mnogi nazivaju Gausovom krivom.
01:09
Or it could be evaluated with reference to set criteria,
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Ili može da se oceni u odnosu na zacrtane kriterijume,
01:13
such as carrying a certain amount of weight a certain distance
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poput nošenja određene količine tereta određenom udaljenošću,
01:17
up a certain number of stairs.
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duž određenog broja stepenica.
01:19
Similarly, the diplomat might be measured against other test-taking diplomats,
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Slično, diplomata može da se ocenjuje naspram drugih testiranih diplomata
01:24
or against a set of fixed criteria,
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ili naspram niza utvrđenih kriterijuma,
01:27
which demonstrate different levels of language proficiency.
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koji prikazuju različite nivoe jezičke stručnosti.
01:31
And all of these results can be expressed using something called a percentile.
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A svi ovi rezultati mogu da se izraze nečim što se naziva percentilom.
01:35
If a diplomat is in the 70th percentile, 70% of test takers scored below her.
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Ako diplomata spada u 70. percentil, 70% testiranih su bili gori od njega.
01:41
If she scored in the 30th percentile, 70% of test takers scored above her.
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Ako je njegov rezultat 30. percentil, 70% testiranih je imalo bolji rezultat.
01:47
Although standardized tests are sometimes controversial,
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Iako su standardizovani testovi ponekad kontroverzni,
01:50
they're simply a tool.
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radi se o pukom oruđu.
01:52
As a thought experiment, think of a standardized test as a ruler.
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Kao misaoni eksperiment, razmišljajte o standardizovanom testu kao lenjiru.
01:56
A ruler's usefulness depends on two things.
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Svrsishodnost lenjira zavisi od dve stvari.
01:59
First, the job we ask it to do.
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Prvo, posla koji od njega zahtevamo.
02:02
Our ruler can't measure the temperature outside
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Naš lenjir ne može da meri spoljnu temperaturu
02:04
or how loud someone is singing.
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ili koliko glasno neko peva.
02:07
Second, the ruler's usefulness depends on its design.
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Drugo, svrsishodnost lenjira zavisi od njegovog dizajna.
02:10
Say you need to measure the circumference of an orange.
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Recimo da treba da izmerite obim pomorandže.
02:14
Our ruler measures length, which is the right quantity,
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Naš lenjir meri dužinu, a to je odgovarajuća jedinica,
02:17
but it hasn't been designed with the flexibility required for the task at hand.
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ali nije dizajniran da ima potrebnu savitljivost za traženi zadatak.
02:22
So, if standardized tests are given the wrong job,
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Dakle, ako standardizovani testovi imaju pogrešnu upotrebu
02:25
or aren't designed properly,
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ili nisu dizajnirani pravilno,
02:27
they may end up measuring the wrong things.
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može da se desi da izmere pogrešne stvari.
02:31
In the case of schools,
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U slučaju škola,
02:32
students with test anxiety may have trouble performing their best
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đaci sa tremom od testiranja mogu da imaju problema sa učinkovitošću
02:36
on a standardized test,
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na standardizovanom testu,
02:38
not because they don't know the answers,
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ne zato što ne znaju odgovore,
02:40
but because they're feeling too nervous to share what they've learned.
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već zato što su suviše nervozni da bi pokazali naučeno.
02:43
Students with reading challenges
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Đaci koji imaju problema sa čitanjem
02:45
may struggle with the wording of a math problem,
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mogu da se muče zbog jezičke formulacije matematičkog problema,
02:48
so their test results may better reflect their literacy
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pa su njihovi rezultati možda više odraz njihove pismenosti
02:50
rather than numeracy skills.
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nego numeričkih veština.
02:53
And students who were confused by examples
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A đaci koje zbunjuju primeri
02:55
on tests that contain unfamiliar cultural references
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na testovima koji sadrže nepoznate kulturološke reference
02:59
may do poorly,
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mogu loše da prođu,
03:00
telling us more about the test taker's cultural familiarity
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što nam više govori o kulturološkoj upućenosti testiranog
03:03
than their academic learning.
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nego o njegovom akademskom znanju.
03:05
In these cases, the tests may need to be designed differently.
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U ovim slučajevima, možda treba drugačije dizajnirati testove.
03:11
Standardized tests can also have a hard time
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Standardizovani testovi mogu i da imaju problem
03:13
measuring abstract characteristics or skills,
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kod merenja apstraktnih osobina ili veština,
03:16
such as creativity, critical thinking, and collaboration.
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poput kreativnosti, kritičkog mišljenja i saradnje.
03:20
If we design a test poorly,
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Ako loše dizajniramo test
03:22
or ask it to do the wrong job,
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ili tražimo da obavi pogrešan posao
03:24
or a job it's not very good at,
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ili posao u kome nije dobar,
03:26
the results may not be reliable or valid.
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rezultati možda neće biti pouzdani, ni validni.
03:29
Reliability and validity are two critical ideas
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Pouzdanost i validnost su dve ključne ideje
03:32
for understanding standardized tests.
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za razumevanje standardizovanih testova.
03:35
To understand the difference between them,
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Da bismo razumeli razlike među njima,
03:37
we can use the metaphor of two broken thermometers.
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možemo da koristimo metaforu o dva pokvarena termometra.
03:40
An unreliable thermometer
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Nepouzdan termometar
03:42
gives you a different reading each time you take your temperature,
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vam pokazuje različita očitavanja svaki put kad izmerite temperaturu,
03:45
and the reliable but invalid thermometer is consistently ten degrees too hot.
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a pouzdani, ali nevažeći termometar je konstantno 10 stepeni topliji.
03:51
Validity also depends on accurate interpretations of results.
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Validnost takođe zavisi od tačne interpretacije rezultata.
03:55
If people say results of a test mean something they don't,
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Ako ljudi kažu da rezultati testa znače nešto što ne znače,
03:58
that test may have a validity problem.
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taj test može da ima problem s validnošću.
04:01
Just as we wouldn't expect a ruler to tell us how much an elephant weighs,
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Baš kao što ne očekujemo od lenjira da nam kaže težinu slona
04:06
or what it had for breakfast,
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ili šta je slon jeo za doručak,
04:08
we can't expect standardized tests alone to reliably tell us how smart someone is,
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ne možemo očekivati da nam puki standardizovani testovi
pouzdano kažu koliko je neko pametan,
04:14
how diplomats will handle a tough situation,
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kako će se diplomate nositi sa teškom situacjom
04:16
or how brave a firefighter might turn out to be.
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ili koliko će hrabar da bude vatrogasac.
04:20
So standardized tests may help us learn a little about a lot of people
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Dakle, standardizovani testovi nam mogu pomoći da naučimo po malo o mnogo ljudi
04:25
in a short time,
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za kratko vreme,
04:26
but they usually can't tell us a lot about a single person.
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ali obično nam ne mogu reći mnogo o pojedinačnoj osobi.
04:31
Many social scientists worry about test scores resulting in sweeping
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Mnogi sociolozi brinu da rezultati na testovima mogu da ometu
04:35
and often negative changes for test takers,
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i da često uzrokuju negativne promene kod testiranih,
04:38
sometimes with long-term life consequences.
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ponekad sa dugoročnim životnim posledicama.
04:42
We can't blame the tests, though.
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Ipak, ne možemo da krivimo testove.
04:44
It's up to us to use the right tests for the right jobs,
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Na nama je da koristimo prave testove za odgovarajuće poslove
04:48
and to interpret results appropriately.
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i da pravilno tumačimo rezultate.
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