hi everyone is miss monica what construct in stem and we are going to start off where we stopped last time last time i think we were talking about electronics and this supposed to be our last electronics experiment but there's so many things i can do with electronics that i could actually go for ever so this definitely definitely be the last one but before i go there i just want to talk a little bit about stim koreas because whenever people  which is a science technology engineering math a lot of students think that means they have to go to college or they have to be an engineer and that's not the case the case is that science technology engineering  is so broad it's science and technology they're math and there's so many jobs out there that are still type jobs that you can actually get without having a four year degree so feel those who want to talk about and and every so often as we go through our time together i probably will mention different things you can do to actually still have a student career without going to college so i'm going to tell you a few of the things jobs are out there that a job that you can actually do and some of the salaries that are out there so one of the things as a web designer and web designer you don't need four years you know your four year degree there is you do need some type of training there are training out there that you can get to become a web designer also a computer or you support specialist so you can still actually help with computers and that doesn't require a four year degree a geologist technician environmental engineer technician actually a lot of the engineer and a technician some you do it does require for your some does not it just really depends computer network support specialist electronics drafter architect architectural and food science technician and a civil engineer technician which is interesting because when i was actually getting my engineering degree we had the which did require a four year degree and see which did require two so i guess now they've changed some of those but there are a lot of jobs that you can get out there that do we can make a decent salary and and that does not require you to go to college there's actually different type of schools out there where you can still get that or you there are some pathways to companies where you can actually get certain training to and that is something i'm going to try to discuss more and other shells but today we're going to go back to electronics because that's what we were going to finish up with so again i mentioned a few of the jobs that are out there next time i'll go into more detail resistor last time and if you remember it was a very very simple what we did is we actually put in our l e d which is our light emitting dial i think i put it on i use this nice bread board and i put it on three to five and if we just did the basic circuit we went from the breadboard from the positive into the battery to the positive in the l c d then we w negative and the l e d to the negative end of the battery to make sure i had the battery in right because i always turn to and that's was off for a simple one what we did then we i'm going to replace it with a resistor and i have a take up i think this is a very small resistance one hundred zero resistor so it's not going to change the brightness too much but it will change it because it limits the current and this is what vaunted last time with you so we're going to talk about this because i was actually going to do another one with multiple resistors but one of the things my son thought would be interesting if i show you a different something a little different so we're going to do that so if we were to that's what we did so we're going to do two things in this experiment today and this will be in electronics as i said i could do several of these but before i go any further i want to mention that on my website which is i'm debbie to strike you dot com i actually have these kits that we can buy and i'm actually i actually have it for adults too it's called challenge yourself so as an adult if you want to do something a little different to stimulate those other brain cells that you don't use as often we have that kit available for you actually to do circuits so let's go back to this electronics so this is a simple one with the l e d light emitting diode resist or a wire in the battery so so i'm going to put the long in and remember of the l e d is positive in the short in is negative so i'm going to put the long in the row which goes across three and i'm going to put it in the first column i have to make sure i look up enough because i tend to look down so when i've shown to and that's the same with this every time i have class i do do these and two different circuits for my kids will come out of don't know a lot of electronics so same thing we just did it take the positive then we go to the positive and the l e d and if i did it correct which was in front now one of the things we've gone last time we had the issue with add in multiple because when you add multiple what we call kind of a parallel circuit the conner they're not all white as bright as they were before so what we're going to do is i'm going to do the same thing but i'm going to put it in what we call a series which i'm going to put them back to back so the the flow of the current will flow through one ellie and then into another not to go into both of them you know when i put them when i put in the way i had i had an l e d here in my current flow through both of them so it goes it goes to both the l d s and that and then when i put in the third one i do the same thing to so what i want to do and the thing about it is that when you buy batteries they have a certain vote each of voters really is a couple of things they talk about when talk about voltage is one is the potential of the how many vote that the vote each is for example it's supposed to be three votes that and if i had a meter i could look at and see if it really is three volts close maybe it's two point eight a maybe two point nine or maybe a story point two but the potential of it is three that's what they think and it it really depends on where they're created in but that's a potential then also you also think about that as the the vote is as pressure if you think about water going through a pipe and that's always the easy way to explain it to kids and it's child i try to simplify it as much so i do tend to leave out things which is ok because as a girl older and they grow in this field and they like this they will loan more and they will experience more but if you think about it is water going through pipes and you have a current that is flowing through the pipes if there is no pressure then it is pretty it's low it's flowing through very slowly or maybe sitting in the pipe in the design but what you need is pressure to push it through and the pressure can push a large amount through or of small amount through but if the pressure on the back end that that pushes it through in that w voltage really is this is the pressure of it so this three volt battery is is not that you know it doesn't have a lot of voters but it works for what we need with this so this is really an eye so what i'm going to now i have all this  parallel so it's gone through my read through my l e d s back when i have a complete circuit everything's closed everything's touch and it will call close circuit if i open up the circuit which is for example if i take this one up and i open it up and you open up a it's off so it's the same thing as we did when we did the switch turn switch on and off and almost on and off of the switch is is closing the circuit and open a circuit closes on open it's off so let's do this was put it back and let's talk about what i'm going to try to do now and this again as i promised promised will be my last electronics experiment but i love itself so it's a problem i have and i think the  this out and i'm going to try to put this in what we call a series so i'm going to add another the l e d a stead of putting them in the same row as i did before i'm gonna i'm going to combine them where i'm going to take the positive in five and so what i want to do now is i want to put this red this blue blue which is my favorite color and the number five which is the  negative end of the y and then i will stretch it over from five to seven ok so right now the way this work i just put that in the l e d really is not affecting the circuit at all because the circuit still has a closed circuit i have this l e d in this row five the positive in but there is i haven't changed the battery or anything so it's essentially the just there it's not in the circuit at all really because i haven't really placed it in by change in the lead of the battery so what i want to do i have the positive in the positive in here and i want to change this and i want put this in the positive in here so i changed it so i'm sorry the negative and so i left the positive in three and then change the negative and put in seven and so what happens of though when i did this earlier and i put the two l e d s in and i put them in the same row right by each other it's still lit up so i have actually the same type of i haven't changed the elements or anything i'm using electronic components i'm using but i've changed a circuit in the circuits a very simple circuit because i have right now i have this read in three and i have the other end of the l e blue and seven and then i what i did is i took the negative lead from the battery and i put in seven nothing is happening so it's essentially the same components but the circuits changed it's because if i actually want to put it back again if i take this and i put this back again why put the positive in in three and i put the negative in five at a had a four and then i just move this back over to five and i have the same three vote battery the fringe change other than the configuration of the circuit and i'm making sure everything touches because i could make a mistake and talk to you but that something's happening and it's not because i didn't do it correctly but i'm not i'm actually taken the blue l e d out and i'm taken along in and i'm put in this in five and i'm put in the short in seven so it's in the say the positive is in the same row as a negative in the y l e d so i'm kind of extending the the circuit itself so when i move this blue over to seven nothing happen it really should something should happen if if it was working or if i haven't voted she would work but right now it doesn't so let's say i wanted to try to see if i'm correct or if i'm really you know wrong so i take out th s battery and again i always think this is neat because it's such an easy thing to put in this little breadboard but i also have these and i use with my class two these are actually  put two three boat batteries any year so this is a six votes and see if i can show you it's always hard for me to open and i don't have my partner here for one who's a little better at opening things than i am lately not sure if it's age a three vote this is six felt so in this scenario we know when we put the three vote on it did not work and if i have my circuit court rack which i put this in three and it goes down to this nothing's happening  noton it's a pretty circuit but it's not working so let's see if we can actually change the the voltage and one of things with this which is really nice to use when you want to i mean i could actually use other batteries but i like the button bout batteries because it's easier with my class and it's easier for the kids to take own when it's just a nicer kit for them to experiment with and play with so this is another component i think it's very nice too because you haven't you got your positive you know why are you negative while so i'm going to actually try to use this i'm going to go i'm going to do the red and the three witches are positive and i'm going to do the time i mentioned that the l e d is one directional which means that the flow is coming into the positive and so it's going to the positive then out to negative and then it's going into the positive end of the blue l e d into the negative you can do when you're showing your kids or trying to teach them about voltage two in this and really need if you were to get into the whole thing by showing them owns law and i do that with some of my older kids it was someone younger kids i see their eyes glaze over but it's a nice introduction you know to the electronics into circuits then it's just my sense ducts anyway so this is one of things you can do to you just have the three boat which is the thing that i actually add in my kit is just a three b and i have an option if you want to actually do six well you can have that too so i'm going to end my leg tropics series for this time and i want to thank you so much for watching i'm have other things that we're going to be dylan as we go along and i just hope you join me in constructors dam if you have questions or you have on things you like to do are you want to talk or email just contact me at construct you at  com i'm also on facebook and twitter so you know the usual things so if you are interested in more information about electronics because again i'm in the series but there are so many so many different circuits you can do  but i don't want to bore you just give me a call just go on my website and i have videos there too so it's it's fun and it's a great thing for i think adults and for kids thank you so much for joining me again is that nice i'm level w vote so i have to say thank you so much you have a nice day