Hello, I am Jared. Welcome to Fun Science Demos.  A big part of science is making things.  
Hello, I am Jared. Welcome to Fun Science Demos.  A big part of science is making things.  

take a look at what I made. It is my flashlight!  We are going to show you how to make one of these.  
take a look at what I made. It is my flashlight!  We are going to show you how to make one of these.  

We have zoomed in so you can take a closer look  at what you are going to need. You are going to  
We have zoomed in so you can take a closer look  at what you are going to need. You are going to  

need a popsicle stick, a battery, an LED light,  a binder clip, and you can choose to use copper  
need a popsicle stick, a battery, an LED light,  a binder clip, and you can choose to use copper  

tape or electric paint. We got this paint from our  friends at educational innovation so big thumbs up  
tape or electric paint. We got this paint from our  friends at educational innovation so big thumbs up  

to them! The first step is to attach our light  bulb. Now keep in mind with an LED light, one of  
to them! The first step is to attach our light  bulb. Now keep in mind with an LED light, one of  

the wires is longer than the other one. You need  to make sure you know which side that is because  
the wires is longer than the other one. You need  to make sure you know which side that is because  

the longer one is our positive side. So I am going  to slide this over the top of a popsicle stick. I  
the longer one is our positive side. So I am going  to slide this over the top of a popsicle stick. I  

need to make sure I keep track and remember that  this is the positive side, so I just put a little  
need to make sure I keep track and remember that  this is the positive side, so I just put a little  

plus sign. Now I am going to run a piece of tape  all the way down to the end of my popsicle stick.  
plus sign. Now I am going to run a piece of tape  all the way down to the end of my popsicle stick.  

Peeling this can be a little bit of a pain,  so take your time now making sure the tape  
Peeling this can be a little bit of a pain,  so take your time now making sure the tape  

stays straight can be a little tricky. That is  why the paint actually is easier to work with.
stays straight can be a little tricky. That is  why the paint actually is easier to work with.

Got my tape on one side, now time for the  other side. Now before I do the other side,  
Got my tape on one side, now time for the  other side. Now before I do the other side,  

I am going to put my binder clip on the bottom  here. Notice this metal clip is going to come  
I am going to put my binder clip on the bottom  here. Notice this metal clip is going to come  

into contact with that copper strip as well as  when I flip that leg up. Now the other side,  
into contact with that copper strip as well as  when I flip that leg up. Now the other side,  

because I want it to be a switch, I do not want  to take the copper tape all the way to the bottom.  
because I want it to be a switch, I do not want  to take the copper tape all the way to the bottom.  

I want there to be a gap so that when I flip that  leg, then it comes into contact with the copper. I  
I want there to be a gap so that when I flip that  leg, then it comes into contact with the copper. I  

want to be able to turn my flashlight on and off,  so I am going to take a really quick measurement,  
want to be able to turn my flashlight on and off,  so I am going to take a really quick measurement,  

flip my leg down so I know how far to bring it  down, right about there. Let us attach this,
flip my leg down so I know how far to bring it  down, right about there. Let us attach this,

so now you can see I have a gap and the circuit  will be complete when I set my battery down,
so now you can see I have a gap and the circuit  will be complete when I set my battery down,

and flip the switch. Let us give it a try! So  our flashlight is ready to go. Our battery is  
and flip the switch. Let us give it a try! So  our flashlight is ready to go. Our battery is  

going to go on this side with the gap. Our other  side has complete contact. this is our positive  
going to go on this side with the gap. Our other  side has complete contact. this is our positive  

side, so I am going to make sure the negative side  is down, put my battery on, flip the switch...
side, so I am going to make sure the negative side  is down, put my battery on, flip the switch...

...and it works!
...and it works!

Next we wanted to try our electric paint, and  as you can see I ran some electric paint along  
Next we wanted to try our electric paint, and  as you can see I ran some electric paint along  

the whole length of that popsicle stick,  and then I have a shorter length and this  
the whole length of that popsicle stick,  and then I have a shorter length and this  

is going to create my circuit. So let us put our  binder clip on. You can see the metal is coming  
is going to create my circuit. So let us put our  binder clip on. You can see the metal is coming  

into contact with my electric paint, flip  that up, I now have one side of my circuit.  
into contact with my electric paint, flip  that up, I now have one side of my circuit.  

There is the break in my circuit. I am going  to put the battery here and when I flip my leg  
There is the break in my circuit. I am going  to put the battery here and when I flip my leg  

it should complete the circuit, so let us  give it a shot. Let us attach our battery,  
it should complete the circuit, so let us  give it a shot. Let us attach our battery,  

complete our circuit, and our flashlight works!  remember that the paint is much easier to work  
complete our circuit, and our flashlight works!  remember that the paint is much easier to work  

with in the beginning, but it does take  up to a half hour to dry. The copper tape,  
with in the beginning, but it does take  up to a half hour to dry. The copper tape,  

it might be a little tricky to get on, but I  can use it right away. We have also found that  
it might be a little tricky to get on, but I  can use it right away. We have also found that  

with a little bit of design you can see we have  taped our battery on with transparent tape...and  
with a little bit of design you can see we have  taped our battery on with transparent tape...and  

positioned it in such a way that  it will not make a circuit when I  
positioned it in such a way that  it will not make a circuit when I  

flip my switch up. it only completes  the circuit when I apply pressure.
flip my switch up. it only completes  the circuit when I apply pressure.

You can play around with this and try your own  design to see what you can make your flashlight  
You can play around with this and try your own  design to see what you can make your flashlight  

do. you can even try adding an extra battery  to see what kind of results you get from that.
do. you can even try adding an extra battery  to see what kind of results you get from that.

We are using a whole pack of LED lights and they  are not expensive at all, and you can just get  
We are using a whole pack of LED lights and they  are not expensive at all, and you can just get  

them online. We would like to thank our friends  from Educational Innovations for letting us  
them online. We would like to thank our friends  from Educational Innovations for letting us  

take a closer look at their electric paint. If   you want to learn more about electric circuits, 
take a closer look at their electric paint. If   you want to learn more about electric circuits, 

or if you want some other design challenge ideas,  check out our YouTube channel Fun Science Demos.  
or if you want some other design challenge ideas,  check out our YouTube channel Fun Science Demos.  

Science is so cool, especially when we get  to build cool things. Thanks for watching!
Science is so cool, especially when we get  to build cool things. Thanks for watching!