i everyone is this monica and welcome back to construct this death so last week talked we were doing the baja runner and we had finished up this piece if you want to look at it again i stuck in  in these little notches that they have here so they're out of the way of the gears and one of the things you do so you don't have these extra wires is that you know where i had you know looks really nice for that kind of push down you should have a little bump bit of this up sub so doesn't have be look like this so your fit look better than this so we're going to finish up with this and hopefully this will i'm going to just do one little thing because i don't like that black wire and i want to make sure that i don't have problems with it so i'm going to push these up just a little so i don't have that issue but actually i'm going to ok ok i'm going to take this out and do it sorry sorry because i don't like that black wire actually looking like that because i don't ok i don't know if i did exactly what i said i was going to do but i tried that said that now ob one of the things you have to be careful of again is that when you're doing stuff like this playing with wires and they  r they are glued glued to something that you know breaking which i my students and i tend to do and i do it a lot because i always think about you know the deal but big deal put it back together but when you're at a when you have much kids when something like that goes wrong it takes time out of the a building and if it's one student it's nice to have extra distance gives them or if you're at home doing it you have to stop and have somebody help you fixed it takes it and i like when you fix things because you know learning right so whether it kind of slows down you or your building of a project but you learn what you're doing so well i think still that ok i'm going to put the and now so i think i did something to help myself but maybe i didn't hear i'm just getting the wires out the way it's important you do this because of again the yourself i'm just taking these guys in the film not just i had it in ice before i didn't like it because one of my black wires and i'm still doing this i hope you guys can see i'm trying to get in the right spot so that you know it's not that this is not that important but it is important because you don't want the wires to be out and about so when you the gears in this little things start moving it gets hung up in that because then it's not going to work right and you might actually disconnect the wire because as a spins it actually kid it could win a spin and inside here it will stop or it will touch the wall and it's going to be some friction with the two atoms touching in the friction could be that is slows everything them they're so let's go on and make sure you just look at the whole thing look around see if there's any pieces on because that is one of the problems with that i've found with look at this little notch here in little notch here so that's how it's going to go and the thing about it you have to have the it's a compound year which has a big year and it has this small here and a small here has to be facing this way this way because when you put this another gear that you put in here that is going to get it to spend because our main here is this year is up our gear so we know if this is up our gear then we put another year here that this action that has to happen where we get that so we get that spending everything right so what we're going to do is we're going to put it right here right here and again like i said you want to have this you want to have like kind of like this and i'll let me check to make sure because i am almost positive correct i'm right yes i am so it's going to go in like this like this right so let's just put the the pole see where you put this in i guess i think i do need new glasses but it could be wrong but this goes in just like this though you want to make sure there's the poles are not touching anything there's a nice or nice you know room between it spot that i should show everything right there and we're going to put this in like this ok and then i kind of turn it over to make sure it's it's you know it's in there correctly for a table a step down and you should see the tip of the pole which is a silver piece so this is what it should look like that's that it should look like that so what you do that with a put this in here now you have the weight washed away this is also facing because again beers are important we put them in correctly so we're going to take this now and we're going to put it just like this like that and if i was the other end i don't think we need much for that so when we'll have to worry you could have done it earlier and another step for us i missed it so scissors other i do like the clippers better but since i am focusing this on either teachers or students let's use a scissors i don't like to have them there they're stiff and work and what younger students i want them put their fingers there and you know doing something that may cut them even though it's plastic it's hard plastic right so i cut back and i just clipped that  is a learning experience so we take this which is story and we want to close this up and if you look at if you look at it it's symmetrical right the two pieces on well fairly self i mean there are some l press it to gather and you hear that little click blah law that right it's that so i'm also if you go back to this there is two little pieces to make sure this is the so and and the other one i am sorry to say is five so it be five so you took this first piece and put it right here if you can see this i'm gonna make sure i have it in the right spot so we can see it and all it does is just make sure the two pieces to two halves make a hole so the two symmetrical pieces are together so you do that so you know if you're doing this you're teaching math i mean there's so many things you can break this down and to teach and  ten this just will piece where you have to take this little piece off now this piece is one of those pieces you want to make sure if you have an extra one that you don't lose because this piece seems to pop off and that could be because if you don't put the gear on correctly and that's what i'm going to make sure you put this gear on correctly because the two gears have to combine and i think it's like this because there's another here that comes on here too and i want to make sure i have that right i think it's actually i think it's the other way let me know this is right so you put this where the the compound here where the big ear is touching the body in that the small gears out because there's another here on the axle that's going to use this little small gear and so you want to make sure this is correct and so right now this gear is kind of loose right and so you want to make sure it isn't this the piece that i that i'm losing you want to put this on it you one put it on the tip  way this works is that we the the large wheels go in the back and the large wheels are a four a four so i'm going to take them out and put them here because i'm not doing the back wheels yet because to do a whole series on becks but i'm not sure so you're see when i go to my next class i'm clipping i'm off remember i said cut those guys off and said i'm teacher is that ok but that there and that's to the small wheels because we're actually going to do the small wheels for this so the small wheels are three right they are a a three a three let's take these off so we're going to take this out and when i put this on now this gear this gear right here this is this one you see here that's going to actually go underneath this white here and this white here is going to actually touch the and if you were to just do like this you should that's something whenever you use gears i was like didn't see if i hear that they're you know they're connected with it should be so then we just take this and we just put it on this is hold it in put it on  it down i take this ups sorry i still this again put this in here and get a little nervous i'm looking at the time which is i stand to do that lot right and the most important part of the really nice ok so listen barack a part so let's take out this is our holder for the batteries let's take this out and i'm doing this quick so if you can use it give scissors tweezers whatever just to then get out a little piece o out and then give the views of how to convert the other so you have to make sure you go over that and i want to rush through that so i think i'm going to actually slow down ted because i'm going to do my next class i'm just going to go through the battery component if you don't mind waiting we can go through and talk about it we'll talk about it i will do it here because i don't want to spend a little time on it and i don't have much so we have a thing go the battery is the last piece we want to build and in this it's really nice because actually take them out and clean them sole that's good to make and they have extra so you're whoever's building is the teachers the kids you don't want to lose these pieces because you're going to need them there's three magnesium strips which is great  last a long time he put the society's going to use a slide on the put it right here and so the way this works is you build it on here and our time is really running out and i'm going to build this next my next class because i have everything except this but you take this if you're going to actually put this in so if you are watching this and you want to do this because i didn't have the time to complete it correctly you would put laid this down for us and you will make sure this put the salt water on to get to the electrolytes go into to actually start the chemical reaction so then you take the magnesium strip you would put it right here right so so then you would actually take  time to do it so i'm going to try and if i run out of time which i think i am going to sell you know what i'm not going to rush to do it because i really like to talk about a bit more so we're going to do that next time but if you want to sit home and you know and wait for me press this down and the fills up with salt water you take it and you put one just haven't oh there's not too much not too much just enough it's a chemical reaction go in and then you take this now is the ok so we're finished ok so what you do too is you can actually take this out and you put this on it so that's all you have to do are we do it again in the next class before we start the other one was very simple right and it's working