you have to have the positive in towards the flow electricity flowing in so we put this in the circuit you want to make sure this positive in is pointing towards the positive end of the battery so that's what the l a p d is so we're going to take that out we also want to take out our battery so because we're going to the power right and the battery in this kid it's really simple to it's you know we have two batteries for that a plus for now minus and we want to make sure again that and this is a resistor and that's why i think these kits are so make that they use the real components the real resistors and you're seeing a little while still and another experiment that's very similar to this but it's not a kit but this is a resist or and the resistors are really really nice e d you resist there you have battery two number two wires and one number three wire and remember you can get these on amazon and just do a search online there's a lot of places that have these now that you can bring home and it's an easy thing to introduce your child to stem and to get them interested and it's an easy thing for you to work with someone to so let's start again love the grid so a numbers there and now let's try  let's say my actually going to do is i'm going to add a switch in here so i'm going to as i think i'm going to take my l a day and i'm going to put it here over here then i'm going to add my switch that i had last time to my circuit and see if we get back to work actually is take this l e d experiment and we've gone to do it in what we call another form with a put it on a bread board where those kids are what your book oh sorry guys i was going to talk about my book and do at home which you can there's multiple experiments you do with your kids and one of the things i haven't here is my experiments on electricity so i have a whole section on use and electricity electronics in this book that you can also use so it's called inside a robot at the top about the inside component the robot things work and i'll go with that more detail and one of my other classes but that's what this book is it's another way of bringing them into your house zero or into a so we are going to now talk about a bridge where the bread for it is very very nice because it gives you this test environment so this is the bread board and what i told you that some bread boards i buy little small ones for my class because the kids get to take them home one of things is that i like to assess my students and the way assess my students is they do a lot of take home projects they build something themselves they take it home because in a lot of them different a lot of them classes kids work in groups and you want in a working group because everybody should learn how to work well with each other because engineers and technologists and scientists and mathematicians sometimes but they work in groups they work with other people code in programmers you work with other people so that's one of the goals when your child is taken any type of stem class is a working group so they learn how to work with other people but you also want to know that your child or your student actually skins the concept of what you taught and what i do is i do a lot of tons of take home projects and that means that if i teach them a concept we're going to learn something today they may have a take home project so that means they are learning the concepts they can actually rebuild their home hopefully and if they have problems and come back and ask me they can send me email whatever but that's what is so that's why i have these little small breadboards so my kids could take them home and give on my one they have the numbers on what we call their their roles in a row on a breadboard is if you think about what we did we connected everything together so when we did the snap circuit for circuit to work everything had to be connected if we had open circuit in work so the same thing concept with the bread board the row everything is connected in a row in the breadboard so these are rows across the columns or down so the rows are actually numbered on some of the bread boards and the columns are lettered on some of the bread boards so we have a row across and a column down and this little piece in the middle actually devices so you have two sets of rows on both sides so that's the first thing you tell them because you want to start thinking that way the next i'm going to do is i'm going to give vaughn and myself often l e d now i have different color l e d s here and i don't remember and that's another thing i actually say i like about  and i'm actually doing one class one of these days with them but that just talk about all of you because the color of the elysees really really neat they actually use different elements and they combine them and that and so the vote positive in the battery tell you what color you have and i have a pretty one blue loses by favorite but they go out blue even though it's my favorite it uses more voted so by the button batteries a three vote batteries and is actually in a circuit is the pressure so if you think about water go in through pipe it could sit in the pipe but you need something in either the altitude or something that's pushing the water through and it's the same concept with vote s just kind of pushes the electrons through the circuit so the these so these are three votes and also the l e d's three what i think it's two point eight to three so you can't put a lot of l really nice the high end is your positive and the low end is your negative and the problems on the knee are what you attached to the board so the first thing you have to know is that we put the battery and you have to put the plus battery in just like th them they always hard to get and you have to be a little patient with it so the plus should be out even take this and i'm going to put this on my breadboard and i want to put it actually across number three m and do a three with the high end which is the positive on three it's going to go probably down to i think like fourteen i remember arthur be wrong actually  and i'm going to read and i'm going to do