4th Grade Motion Science - Free Educational videos for Students in K-12

4th Grade Motion Science - By

Transcript


00:07	Okay , guys , we're going to get back into
00:10	science . I know we've done some reading . Where
00:12	is your science journal ? All science journals ? I'm
00:17	seeing about three people without their journals on their desks
00:20	. Okay , good , good . And I see
00:23	those prepared . Excellent . Okay . Who can tell
00:28	me what we have been ? Uh what unit of
00:33	study we've started in science ? Who can tell me
00:35	? Yes . Motion and design . What is motion
00:41	? What does that mean ? Yes . It has
00:44	like forces . It's forced . What do you mean
00:50	? Motion has forced ? What do you what explain
00:52	what you're talking about ? It has like it has
00:57	pushing and pulling . Okay , that's a force .
01:01	Okay . What does that have to do with motion
01:08	? You're on the right track , buddy , boy
01:11	. Okay . Yes . Good . Good . Good
01:14	job . Thank you . Motion is a change of
01:17	position . Motion is a change of position . And
01:20	to change of position ? You need to what ?
01:24	And what , Jackson ? You need a force .
01:28	Of course . Good job , Good job . And
01:32	what can cause that force . I know we've made
01:35	some vehicles and we've made the move . What causes
01:38	that force ? Isaiah push and pull a pusher pool
01:46	. Okay . How do we provide that pusher pool
01:48	that gets our vehicle going ? Remember , we can
01:52	push it ? And like I said , just the
01:55	vehicle , we can push it in as far rolling
01:57	. And that's so you can use use your hand
01:59	, your own your own force of your muscles .
02:02	Good . How else can we get this to move
02:06	? What's on your mind ? Preston anything ? No
02:09	? Okay . Um , Yeah , we can blow
02:15	on it and they will . Okay , so ,
02:18	so what does that do ? Good . We can
02:20	we can win . And when does what push it
02:24	pushes it ? Good . Good . Any other ideas
02:28	? You can you can touch it with your hair
02:31	? Is not pushing it forward . Okay . All
02:34	right . You said kicky . Kick it . And
02:38	what does that provide ? I uh yeah , a
02:45	kick provides movement . It does provide movement . Is
02:51	it a pusher pool , push a push . What's
02:54	your what's your idea , drink , gravity , gravity
02:58	. And what kind of force does gravity provides ?
03:02	Sort of like a pushing like a ramp or something
03:04	? Could maybe does it push or does it pull
03:07	it kind of pushes it a little bit . It
03:12	does a little bit of both because at the beginning
03:14	it pushes it down . But and then like but
03:18	then after it pushes it close to the end of
03:21	the ramp , it'll and it'll be start pulling it
03:24	down . Okay . All right , good . Now
03:27	, one thing I want us to think about ,
03:30	I'm gonna use this vehicle here . Okay , now
03:36	we have done some reading . And we have we
03:38	have used some of our reading strategies such as synthesizing
03:43	. We've got some new ideas and one of uh
03:47	, tell me some things you found out from our
03:49	reading that has to do with forces in this vehicle
03:55	remote . Uh , at first I thought if we're
03:59	with the vehicle with the vehicle we , we can
04:03	use , like it's just like a toy car .
04:05	If you racing to toy cars when you push them
04:09	, they keep going into the hit something . When
04:12	they hit it , it stops . Okay . So
04:16	of force provides the most it makes it go right
04:20	. Okay . Whether it's a push or a pull
04:22	and then until another force , like you said something
04:26	, has it stopped or changed ? Good job ,
04:29	good job , stop or change his position . Okay
04:32	. Good . Um , what else did we learn
04:35	from our reading this morning ? What , what ,
04:37	what other new ideas or things that you understand ?
04:41	Did you get from your reading ? Isabel ? I
04:45	understood that because I , because I thought like a
04:50	force was just anything , but it was all it
04:54	was was a pushing pool . Okay . Okay ,
04:57	now I want you , let's look at let's look
05:01	at this vehicle right here . Okay . We've got
05:05	everything on here . Let's look at this vehicle right
05:08	here . It's not going anywhere . Are their forces
05:12	acting on this vehicle ? Because it's it's still it's
05:15	at rest . It's not moving . So is there
05:18	force still here ? Yes . No , no .
05:23	Okay . Somebody has a different idea . Yes .
05:26	Because it's forced that's still moving it . But there's
05:30	not enough force to push it or fully . Okay
05:34	. All right . For us , they're still forced
05:37	there . Okay . What's your idea ? Um There's
05:41	still force on it . But it's the equal amount
05:45	of force , An equal amount of force . What
05:47	does that mean ? So the equal amount of force
05:49	. What it's keeping it from moving . Okay ,
05:53	good . It's keeping it from moving . We've got
05:56	gravity pulling on it , we've got this table in
06:00	this book that's that's keeping it from going anywhere .
06:03	And the force of the air , everything is equalized
06:07	. Um Come here ali and when we have a
06:13	balanced force it's not going to move it's going to
06:16	be at rest . I want you to push as
06:18	hard as you can . Okay ? Are we moving
06:22	now ? Well I just moved my hand but but
06:25	I mean am I moving her hands ? She moving
06:27	mine ? No because we're pushing we're gonna push .
06:31	Okay now we have equal balance of forces . She
06:34	can't move my arm back and I can't move her
06:36	arm back because we the balance the forces are equal
06:40	. Okay now push as hard as you can as
06:43	far . Okay ? Okay now the balance was unequal
06:47	she had more force on my arm . That unequal
06:50	force forced my arm to move . Which is what
06:54	you were doing to the vehicles when you made them
06:56	move . Thank you , sweetheart . What we're going
06:59	to do today is we're going to test force on
07:04	our vehicles . We are going to use what's called
07:09	a falling weight system to do that . Okay .
07:14	A falling weight system . Now I want all eyes
07:19	to follow me over here . Okay . Mhm .
07:24	Okay . You will have would you get me in
07:26	my vehicle please ? Or whoever's vehicle ? Okay .
07:32	You see around the room ? We have . Thank
07:35	you , sweetheart . We have placed our buckets and
07:41	vehicles and some other equipment around the room . What
07:46	I have is a piece of cardboard and it has
07:55	some fishing line and hooks . Okay . Case you
08:00	also have . You also have weights . Okay .
08:08	Mm . And we have a book end . Okay
08:18	. And we're going to get that . What I
08:20	why would we have a book into two if we're
08:23	trying to make our vehicle move ? What's the book
08:27	in for ? What do you think Ethan Stop it
08:32	to stop ? Stop what ? The vehicle ? Yeah
08:35	. Okay . So it doesn't fall off the edge
08:38	of our , of our desk , of our table
08:40	, of our bookcase . Now , I also want
08:43	you to think about um as we're as we're doing
08:46	this , uh you're going to take the hook and
08:51	you're going to put it against the front axle .
08:53	Remember that front axle is not moving , It's gonna
08:56	you're gonna hook it here and you will have the
09:04	other end right at the edge . Okay , what
09:07	that means ? I'm gonna hold this up , sit
09:09	down . I'm gonna hold this up . This should
09:12	hang like this where the top of this paper clip
09:17	, it's just as equal flash with the book it
09:23	. Okay . All right . Mhm . Put your
09:27	hand down , please . Now you're going to be
09:36	putting weights . You have little washers , 25 little
09:42	washers in a cup and you have one large washer
09:47	in a few minutes . We're going to be reading
09:50	our instructions as a team . But I just kind
09:53	of wanted to show you how this worked . Someone
09:56	is going to be holding our vehicle while another one
10:04	is putting on a certain number of washers . Okay
10:09	? Someone will be holding this holding the vehicle .
10:12	You're going to place the washers on the hook and
10:17	then one of you is gonna say go , you're
10:20	going to let go and you're gonna see where how
10:22	far travels . Okay ? You're you're going well ,
10:26	how do we know how far it travels ? I
10:28	had you will have also a tape measure okay ,
10:35	in which you can travel a distance . You can
10:38	use uh make sure that you mark where you where
10:42	the back tires are so that you know how far
10:46	it goes . Put hands down please so that you
10:49	know how far it goes . And then you're gonna
10:54	record in your journals and I'll show you how to
10:57	do this . You're going to record in your journals
10:59	what you found . You're going to keep increasing the
11:03	weight . So I want you to think about it
11:05	. If I have four small washers silva and I
11:10	put it on the hook , how is the effect
11:15	of the motion on this vehicle going to be different
11:18	than if I had eight small washers ? How is
11:21	that going to be different do you think mm Or
11:25	would it be different ? Yes . It would be
11:30	different because the um the way it is kind of
11:39	like helping the gravity stop stop being the vehicle and
11:44	pulling it down So it has four weight and that
11:51	it won't it won't go farther but it has more
11:56	ways it will stop , it will stop sooner .
12:00	Okay . Okay so you think you think the more
12:03	weight yeah um it'll it uh it will stop sooner
12:10	so it doesn't go as far . So the last
12:12	weight the further it goes . Who has another idea
12:15	? Ok I like your thinking Yes the more white
12:19	it puts on the the fat the faster is gonna
12:25	hit something because once you put the washers on there
12:31	is gonna the paper , the hook is gonna go
12:35	, the hook's gonna start moving in town and that's
12:40	a part of gravity . It's gonna start moving down
12:45	then the then our car is gonna start coming .
12:50	Okay so what's going to have the more the more
12:53	way to put put on there . How's that going
12:54	to change the motion of the vehicle ? The more
12:58	weight , the more what more faster the more speed
13:03	, the faster you think it'll go . Okay ,
13:05	well we can see about who , who agrees with
13:08	uh Jackson did . The more weight the faster and
13:12	further the vehicle will go . Okay . So we
13:16	have What about 234567 . About 10 . Who ?
13:20	Who agrees with Jaden that the more weight uh the
13:29	the less uh it won't go as far . Okay
13:34	, so we're going to see , we're going to
13:37	find out . I would like you to open up
13:41	your journals two , page Um 13 at the bottom
13:48	it says page 13 . Open your journals to page
13:52	13 . Yeah . Yeah . Okay . If you
14:05	look on page 13 . Hello ? Nice camera's not
14:11	working . If you look on page 13 , who
14:16	would like to read the first part of the directions
14:18	? Because the first part , we've already kind of
14:20	have for us read the first part of the directions
14:23	, Keeley , pick up the material , Place your
14:28	vehicle on the long flat workspace assigned to your your
14:35	group by the teacher . Then set up the work
14:39	space just as it is a picture . Okay .
14:43	Now if you notice the picture , what did you
14:46	, the picture kind of looks like what I showed
14:48	you , isn't it ? Didn't it ? Okay .
14:50	The picture was just like I showed you now you're
14:55	going to you're going to read in your group .
15:00	Yeah . The steps okay one Through uh pages 13
15:07	and 14 . And I want you to talk about
15:09	you're going to read it through and then I'm going
15:13	to assign you to your spots And you're going to
15:18	follow these directions to complete the assignment . Now I
15:22	want you to look on page 15 in your journal
15:26	. Look on page 15 in your journal . Okay
15:31	, This is your recording sheet . Page 15 in
15:36	your journal is your recording sheet . And I want
15:39	you to look carefully at this recording sheet . Now
15:43	if you notice the recording sheet , what is it
15:46	? We're recording how our vehicle moves and we have
15:50	three columns , one column . It says number and
15:54	size of washers . So it's giving you how many
15:58	washers you're going to use and what size you're going
16:03	to use . Okay in the middle you have a
16:06	larger space . That's observations about how the vehicle moved
16:13	. You're gonna write down what you see , You're
16:14	gonna talk about it , write it down . Each
16:16	one of you will be writing it down in ,
16:19	one person from your group will be sharing out once
16:23	we're finished . Okay Now I want you to look
16:27	at this 1st 1 with one small washer because you
16:31	don't have to use one small washer . This is
16:33	already showing it to you . It says who would
16:37	like to read what the fourth grade observer wrote in
16:41	that in that uh area . There was only a
16:47	small 4th . pulling the car . Yeah . First
16:54	it wouldn't start start moving , then it moves very
17:01	slow . Okay ? So that's one thing if if
17:06	you find that it's not moving okay , don't give
17:11	it a push , but you can one finger touch
17:16	the back axle and see if that helps . Okay
17:21	? Okay . Just give it a touch . Don't
17:23	push it because you wouldn't get a true reading .
17:27	Okay ? So you're gonna . Yes , I have
17:30	a question . Yes . Um As you set it
17:33	up , like you set it up just like it
17:36	but you ain't I don't I don't know . How
17:38	do you when you pull it back , how do
17:40	you do it ? What do you mean when you
17:42	pull it ? Like how do you possibly let it
17:44	go ? You pull it , you just let it
17:46	, you put the washers on , you , let
17:48	it go and see if that will pull pull the
17:50	vehicle and see how far and how fast it'll go
17:53	. We're going to see what it does is it
17:56	changes . No , the string . Come , come
18:03	here , uh Ramon , the string is pulled tie
18:11	. Okay ? Now I don't have anything on here
18:14	, so there's nothing pooling really . This okay ,
18:18	The vehicle . Okay , So no someone's holding it
18:23	once , once , once you put however many washers
18:26	you're gonna put on here , whatever it says ,
18:29	then you're going to let it go , and then
18:34	you're going to see how far and how fast it
18:37	will go . With however many washers you put on
18:40	there , Whether it's 4 8 , 16 or 20
18:45	. Okay ? Okay . then you're observing , you're
18:50	watching and you're recording what you're observing , you're going
18:55	to do that with two small washers , four small
18:59	washers , eight small washers , 16 small washers .
19:04	Or if you don't want to use 16 small washers
19:07	, you use one large washer . Okay . And
19:12	each one of you has one of those . Once
19:15	you have done your observations then you're going to rank
19:21	the speed , you're going to look and see which
19:24	one was the slowest And you're going to give it
19:30	a number , value of one . Your next slowest
19:33	is too On up to five . What number is
19:38	going to be your fastest five ? So each one
19:43	will have a different number from 1-5 . Your slowest
19:47	to your fastest . Okay . We're going to start
19:52	with the reading of the instructions . Please turn back
19:57	to page 13 . Yes mm . Um when when
20:04	we're doing their own rankings . Um uh let's listen
20:11	. It might be your question . If they go
20:14	a certain speed and half of that speed , like
20:18	, like 1.5 can we like put One and then
20:24	the fraction 1 ? Well you're not you're not gonna
20:26	rank them until you've looked looked at all of them
20:29	. Okay . Until you've done all the testing and
20:33	then it's only gonna be 12345 Okay ? You can
20:37	state that um four small washers went twice as fast
20:44	or twice as slow as too small washers . Okay
20:49	. And you that would be part of your observation
20:52	. That's what you're writing down . That's an excellent
20:54	question . Another question . No . Yes . No
21:00	, you're fine . Uh huh . What happens if
21:05	it's like , like the car fault ? Because to
21:08	me uh why are you telling me ? Well then
21:12	you just pick it back up and put it back
21:14	up there . It's a car falls , it falls
21:16	, okay . That's okay . All right . Uh
21:19	sit down and I'm going to give you a few
21:22	minutes to read , y'all can take turns reading instructions
21:26	and let's go each group . Okay ? No ,
21:33	no , I said you don't leave until this is
21:35	done . Okay . Alright way sending . I can't
21:44	pronounce it by a way . A signing each triangle
21:51	number from 1 to 5 . Trial a number from
21:57	one to wait five being the way pull the vehicle
22:03	weight pulls the way you guys have any questions about
22:14	what you need to do . Are you ready to
22:16	start ? Okay ? What's your question ? Okay ,
22:22	when they wake the activity , that means you do
22:27	it again . Okay . When you know when they
22:31	were like deciding that they thought the vehicle was going
22:34	to go like , like faster or slower ? I
22:37	got out my old prediction . I think it's going
22:39	to go faster , but it's going to go backwards
22:42	because the way it's gonna be pulling it down and
22:44	then the line on its gonna be pulling it forward
22:47	which is going backwards . You let me know how
22:49	your prediction goes . Okay . Now remember you're following
22:53	how many of these ? Because you're going to start
22:55	with two . All right . You ready ? Do
23:00	you agree with the way ? Alright , well ,
23:10	that's it . Not yet . Not yet . Okay
23:14	, let's start . Okay . Okay . Have you
23:19	guys finished you're reading do you think you're ready ?
23:22	Okay . Uh , you've got four . It's okay
23:31	. You're just gonna put your name . Okay .
23:33	And I know what group you're in because you're all
23:35	right here . Okay , Now you have your supplies
23:42	here and you're going to just use use but you're
23:45	going to use like , um I think your two
23:49	deaths are the most even and you're going to pull
23:51	these together these three together . Okay . And you're
23:55	gonna set it up here . This is the stuff
23:58	if you have trouble setting it up , you let
23:59	me know . You should have . Yeah . Do
24:01	you have a tape measure over there too ? Okay
24:04	. Alright . Okay . You're gonna put these together
24:07	and this is gonna be your uh this is gonna
24:12	be your place to do your , you're going to
24:15	use these three . You don't need to pull that
24:17	all the way out . You just need to not
24:18	have it on top of it . Uh You don't
24:23	need to Okay . Yes , you can start you
24:27	four . Come over here . You for going to
24:31	use this table here . Uh Okay . You know
24:36	a tape measure ? Look in the blue crate in
24:40	one of the buckets and it's in there . Okay
24:43	? You're gonna have to it's gotta go off this
24:45	way . Okay ? So your vehicle is gonna have
24:48	to go face , where do you think it's going
24:50	to have to face so that this can pull it
24:52	down ? Can I pull it down anywhere here ?
24:55	No . What are you gonna have to do ?
24:57	There you go . There you go . So this
25:00	should go where where should this go ? There you
25:04	go , Okay , you cook it onto the axle
25:09	. You done writing 15 cm . Okay ? Where
25:28	do I put it again ? Let's just about 60
25:52	69 . Hey Summer , recording what they saw ?
26:04	Excellent . Did you record what you saw way ?
26:11	Okay now I got to know you pull it way
26:18	. You let it go . Just let it go
26:20	. Let it go way . Wait , you can
26:46	wait . What technical difficulties are you having ? After
27:52	we did everyone know each time you're supposed to write
27:55	your observations , right ? Your observations after each one
28:00	. Okay . Right . Your observations do not do
28:04	not do the speed . Okay , erase the speed
28:07	. That no , you can't do that until you've
28:09	written all your observations . Okay . I believe that
28:15	was in my directions . It was in these directions
28:17	that you read way , way , way , way
29:44	4321 , freeze . Right , okay . Listen to
29:57	all instructions carefully . When I say go On a
30:06	# one voice , you are going to put the
30:13	tape that's right in your bucket , your vehicle ,
30:18	in your bucket . You're going to take the cardboard
30:22	that you got and the string and you're going to
30:25	wrap it back around so it does not get nodded
30:29	. Okay ? And you're going to sit your bucket
30:34	with your vehicle and your a cup of your cup
30:40	of uh washers . Uh Well I just spilled it
30:44	your cup of washers with your equipment without doing what
30:48	I did , spilling it all over the place .
30:51	Now those who have their buckets at the tape Listen
30:55	, I did not say go , did you hear
30:56	me say go , no . The ones that have
31:00	their buckets on the table when you have your equipment
31:06	together , you're going to take your equipment , put
31:10	it together on the back table over there . Go
31:20	I'm seeing some good clean up over here . Working
31:40	together . Well , mm .

Summarizer

DESCRIPTION:

4th grade science lesson on motion.

OVERVIEW:

4th Grade Motion Science is a free educational video by .

This page not only allows students and teachers view 4th Grade Motion Science videos but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.