Controlled Experiments

Meet Mark and Molly. They were just given some plants. The only problem is that neither Mark nor Molly has a green thumb, they are not very good at growing plants. In order the keep the plants healthy Mark and Molly need to figure out how much to water the plants.
Mark takes his plant, places it in the window and decides to give it 100ml of water once a week. Molly hides her plant from Mark and places it in the closet. There she decides to water it with 100ml of water three times a week.
One month later.
Mark's plant is green, tall and healthy. Molly's is looking a little yellow and not so healthy. Mark concludes that it is better to water a plant once a week. Although Mark's plant is healthier something was not fair in this comparison. If you remember Mark's plant received sunlight while Molly's did not.
To figure out how much to water their plants Mark and Molly needed to set up a controlled experiment. In this type of experiment everything needs to stay the same except one variable. Both plants need to be planted in the same size pot, using the same type of soil and the same amount of soil. Each plant needs to be in the same temperature and what Mark and Molly did not do was give each plant the same amount of sunlight. Then one part of the experiment can be manipulated. In our example the amount of water used to water the plants is the only thing different between the two plants. The part of the experiment that is changed is called the independent variable.
One month later.
The results are different this time. Given equal amounts of sunlight we see that the plant responded better to Molly's amount of water. To ensure the accuracy of the experiment Mark and Molly could repeat it a few times to make sure they did not make any mistakes.
Controlled experiments are used in science all of the time. Just remember to keep everything constant or the same except one variable that you change.

[@mollywolffis7836]

After a month they're still wearing the same clothes

[@thiccrubberduck]

Their dumbasses

[@mo0n231]

@@thiccrubberduck it's THEY'RE as in (After a month THEY ARE still wearing the same clothes.

[@someoneidkyeahok]

I HAVE TO WATCH THIS FOR SCHOOL AND ITS SCREWING UP MY UA-cam RECOMMENDATIONS

[@nugs2733]

dislike it and it will stop i think, its what I do

[@someoneidkyeahok]

@@nugs2733 I’m not gonna dislike it. It helped me learn stuff for science. It was actually a pretty good video but I don’t want science videos in my feed.

[@umers2122]

Legend says they're still wearing the same clothes to this very day

[@doiknowyou6284]

"Molly hid her plant in the closet."
Bad memories arrives.

[@frankthetank0012]

Who is watching this in 2020 for HW??

[@loveyou-tt8uu]

yes

[@Nick-cw6le]

Nope

[@hoichingchong5911]

me😊

[@Dipsssz]

me 💀

[@user-uh8sf3hr4b]

Me,2023😢😢

[@joshuamenezes1840]

who else school is using this vid
like for yes

[@Kiran-yb3wo]

beanos

[@butterpeakx1017]

i am

[@de_todo_un_poquito.1364]

Me

[@carlpiaf4476]

This is great for younger kids or as a simple introduction. Great example. I've been looking for a good video on this topic for my students and this is the best I've seen so far. Thank you!

[@maykelanjelo9153]

I'm actually figuring out what this means for a question in my worksheets. At first I have doubts but after seeing this, wow okay so that's what it is. Thank you very much.

[@drolly00]

Thanks for the kind words! I plan on adding more videos each week keep checking the channel!

[@loveyou-tt8uu]

the fact im watching this is hurting my soul (for school still sad tho)

[@footxballxedits3378]

Same

[@ciarahbaddie4134]

😭💔same

[@KnockoutInvesting]

Great video Mark. I am going to use this in my science class. However, I would also add the dependent variable to show how Molly's plant grew more than Mark's.

[@michaelasiu]

Excellent video- simple. makes the points. and paced just right. thank you for making this part of science make sense!

[@manalalghareeb9967]

It is a very important video to start introducing the idea of scientific method and how to set an experiment for elementary students, thanks a lot.

[@Fayrayz]

thanks m8 was going insane getting my head around this lol

[@professorthanos1138]

thank you

[@kalsooma5759]

Thank you!

[@MrsNeryGarcia]

Thank you! I'll use it on my Bio class this week ;)

[@de_todo_un_poquito.1364]

My teacher make me see this

[@imjustnye3600]

Yes 🙄

[@user-mz1il7uj8v]

Me as well, I feel for you bro 😥

[@arlymimi93]

Such a simple video! Thank you! I understand this better now :)

[@aytacofx]

I need to download this video for my Science class because I need to show it to my class.

[@lilyrosedaisy2003]

I love your clips. They are short and interesting so I can use them to reinforce or introduce concepts with my biology students. Please keep them coming!

[@bananaboi9644]

this is very helpful, thanks!

[@laviniaabdelrahman9011]

This was a good video:) Nice job!

[@sirsam8438]

JUST TELL US THE DEFINTION DANGIT

[@dilciacolon3271]

what was the dependent variable?

[@sebastiantrus6733]

thank you for making this video

[@awilliams7607]

Can you please add a definition for the meaning of controlled experiment

[@tylerd.1]

when this video is 8 years old but you're still doing it for home work

[@Raqui676]

fr

[@jaspermenkens3859]

This helps a lot with the difference between independent and dependent variables!

[@mariaflorezelquiatchon5434]

What is the dependent and independent variable?

[@slamopfpnoobneverunsub5362]

I'm confused about how, Mark's experiment is the same and had vastly different results. This is so big of a loophole, hope you reupload it.

[@CBarnett317]

Thanks, man! This helped! :D

[@nataliele4447]

this helped me more than any other details website

[@happyfuntimeatlatergator9900]

ikr

[@Cltethan]

who else is watching this for school lmao

[@catalyn_swiss9945]

This helped me with my subject

[@skeptill368]

Thanks that helped me a lot because my idea for a science fair project is due tomorrow and it said that it need a control

[@watyes7546]

YOOOO 7 YEARS AGO

[@peaceattak]

@@watyes7546 yOOOOOOOOO 9 YEARS AGO

[@jimmyz.6956]

it is a lesson, not an experiment! it is also about plants which is time consuming to do yourself.

[@Raqui676]

Good Job

[@kaijinkarylleramos7550]

Is the procedure used in the study correct?

[@liana8164]

Thank you so much for your help!!

[@ranchgaming6076]

Mark's plant looks more rotten bruh...🤣

[@pokeboy551]

Good video:)

[@ViperKingYT]

ok cool

[@rouelquilantang225]

what is the controlled setup

[@ranch9090]

Currently watching for school 😝

[@TALAL_717]

IV BEEN SEND HERE BY MY TEACHER

[@sheilaalvarez1879]

Why am I watching this in 2020?!

[@darkgreen2400]

Maybe yo learning it -_-

[@BabuKorrapati]

same

[@pringleswins4456]

same

[@thejakjak8505]

Get ya yeeted on

[@Kiran-yb3wo]

shrek smile on that beat

[@reflectedwurex5200]

It helped me for the quiz

[@alolvera7345]

thx for the vud

[@Jackson59]

😎 cool

[@grumpyyellowfang3344]

Im in highschool and still using this

[@ottovonhohenheisser4616]

Grumpy Yellowfang I’m in college and still using this

[@ASIARUNSYOU]

Sasuke Uchiha I’m in middle and still using this

[@powerplayz7326]

Im in the 8th grade and still using this

[@footxballxedits3378]

How is watching this from school

[@Zum_1111]

so what is the definition of a controlled experiment???

[@jenniferlandrum3500]

An experiment in which only one variable is changed in order to isolate your results. >_

[@Quran_serenity]

In science when doing the experiment, and t must be a controlled experiment. The scientist must contrast an experimental group with a control group

[@Quran_serenity]

An experiment in which Two groups are treated exactly alike except for the one variable being tested

[@Quran_serenity]

Plz sub me

[@sungmoonii]

The definition of a controlled experiment is to only change 1 thing in it.

[@ValerieGonzalez-kr2pr]

so I guess molly's plant ended upcoming out of the closet *ba-dum-tss*

[@thejakjak8505]

Thanks

[@Raqui676]

What the definition tho?

[@SarojSharma-tz7tm]

Thanks sir for this video it really helped 🤗🤗😘😘

[@lpscandy7991]

Hi

[@loveyou-tt8uu]

but it is a great video dont think im hating loll keep uo the work

[@teddyrocksman]

I was summoned here by my 6th grade science teacher

[@alissapaula9425]

Who would watch this on their free time. Not I tf

[@davidwiggin3241]

I get it

[@AprilBass]

Did anyone else come here because they were to lazy to de hw?

[@mariammohammed9523]

hello there I doing my H.W and still didn't understand 😃💔

[@jasper1908]

ye

[@ticcitoby2328]

I still don't understand :|

[@fazevoldemort9774]

Ticci Toby don't worry I'm dumb too

[@RK-hj8tg]

Yea unfortunately 🙁

[@hookahisland8277]

This is 5 months ago

[@drolly00]

[@jessesutton6547]

1:35 it looks like something innapropriate

[@Raqui676]

@@jessesutton6547 fr

[@phuccoiinkorea3341]

OngXuanHong brought me here :D

[@c.nguu99]

2020 anyone ?

[@shanjiesangatanan278]

ollolololololooooooooooooooooooooooooolololololol

[@sacredhuman5310]

dam ◑__◐

[@sacredhuman5310]

@Joel Pahua wat did i do :0

[@Kiran-yb3wo]

1000 likes for a follow up on what happens to mark

[@blackpinkrares7333]

Ok

[@MaxRussell32]

Who’s here from mr barrels class right now?😌

[@user-hu1lp3hh7u]

only u bro

[@Nick-cw6le]

Welp-

[@muhammadsheeha8738]

How can you get subscribers

[@lil9633]

that sucks

[@Kiran-yb3wo]

100 likes for a live stream

[@dougnosbisch4948]

*its corona time*

[@stephaniehernandez6530]

So it’s that one variable being tested called a a manipulation? Manipulated variable trying to identify it within the controlled Experiment

[@elenagayleremoroza776]

lol

[@joshualiang9076]

this comment section is literally the worst

[@reflectedwurex5200]

O

[@illokindomjhon]

School much

[@melissarobateau9598]

This is so stupid. Ive never in my life have ever heard of "controls" ....ive done mamy science experiments and have never heard of controls until I see my child`s first science project. This video explains NOTHING. What the heck is "controls"?????

[@michaelamporful4688]

U bad

[@burritotacor959]

Hi