The LabQuest Viewer allows you to view and control a LabQuest screen
right on a Windows or Macintosh computer.
This is very handy in the classroom as you can display your LabQuest screen
from a demo in front of the class, or maybe show one of
your student groups' LabQuests up for the whole class to see.
You can also use the Viewer to make screenshots for lab instructions, things like that.
To connect your LabQuest to your computer enabled to do that, you can either
with a LabQuest 2 connect it with the USB cable, or through wireless connectivity,
or if you have an original LabQuest, you have to do it by WiFi and you'll need a USB WiFi dongle to do that.
So today I have a LabQuest 2 and so I'm going to be connecting thought the wireless connectivity.
Right now I have this LabQuest connected to the same WiFi network as my computer is,
and so I'll go the computer and launch my LabQuest Viewer software.
When I do that I see a list of available LabQuests and choose the one I want to see.
Group 1 is the one I'm using right here so I just say connect. And there it is,
I have my LabQuest screen displayed on the projector screen and on my computer.
It's the same screen you're seeing in realtime as on the LabQuest 2.
So, now we are ready to do a little experiment.
So, the LabQuest is connected to a motion detector that we have on the track with a cart,
and I'm going to slide this cart up a little bit and take some data.
So I'm gonna start data collection here on the LabQuest,
roll my cart,
alright, and there's some very nice data. Let's go back to the interactive white board to analyize this data.
So I want to determine the acceleration of the cart on the track.
To do that I'm going to do a curve fit on the velocity graph,
so I'm going to select part of the linear region of that graph and,
as you can see, whatever I am doing here is controlling the LabQuest screen in the same way.
Under tha analyze menu, I am going to do a curve fit on the velocity graph.
Here's our data with my selection indicated.
I'll choose a fit, we'll do linear, and now here's our statistics.
So the 'M' is the slope of the line, .19 meters per second squared is the acceleration of our cart
on the ramp, and I'll say OK and it plots our data for us.
Now, another nice feature of the LabQuest Viewer is that you can look at more that one LabQuest at a time.
So I've been looking at the LabQuest that I have running here but Student Group 2
across the room over there has been doing the exact same experiment,
and I want to show their data to the rest of the class.
So I just go back to my LabQuest Viewer sofware and launch another copy,
and this time I say I want to see Group 2's data.
I'll connect to their data and see what they were doing.
Now, they might come up here and present to the entire class to
tell us what they did with theirs.
It looks fairly similar but let's see what their acceleration of their cart was.
Let me go ahead and select a region. Do a curve fit on the velocity,
and a linear fit. So their slope was .42 meters per second squared.
That's their acceleration. So, we probably know from that data that their track was
at a steeper angle than mine was, and we can talk about the differences between those.
So, its a really convenient way. We can go back and forth very easily.
This was my data, Group 1, we can see that right here at the top of the window,
and the other window is Group 2.
Go back and forth and compare data from different groups.
So, its very good thing to do, especially in inquiry labs where you have different groups doing different things.
Talk about all the different data they're getting, so it's a very useful tool.
The third thing that the LabQuest Viewer is really nice for is taking screenshots.
A lot of teachers, instructors, want to make their own lab writeups, and you can grab a screenshot of
instructions, or the actual data if you want, from a LabQuest.
It's an easy way to take a little screenshot of it on you computer to instert into lab instructions.
The really nice thing is that because LabQuest Viewer is an unlimited site liscence for your school
or your college department, you can actually give it to all your students, so when they are
doing your lab writeups they can take screenshots using the LabQuest Viewer and insert those
into their lab reports to submit to you.
So, it's very handy in quite a few ways.
The LabQuest Viewer allows you to do the demos,
allows students to share their data,
and allows you to do screenshots.
It's a very important tool to have in your laboratory.
vernier.com/lq-view