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okay this class is now being recorded what answer did you get what's your what's your ratio what's your rate hello what's your rate I'm still working on it while you're working on it I want to say good morning I hope you had a nice evening and I hope you had some good to eat good morning Marco how are you good morning music thank you Jessica for what you did yesterday you're Jay tendances done for now you just made it mr. Williams I said good morning first good morning how are you good morning anything fun or exciting yesterday something nice and I got Jordans and stuff like that cool I ordered a new pair of tennis shoes I went to the Nike store I didn't realize it was closed good morning good morning well three people in this class did the work that I asked them to do and I went on Alex and a couple of people that went on there and did that as well I haven't checked the acellus this morning but I'll get to that a little bit your color is green yeah one two three four people that acellus strip for people did Alex two people worked on the monthly assessment one person worked on USATestprep out of a class of 30 wow okay so based on this information the way that you're always going to set up for scale model you're going to put the model on the top and the actual on the bottom so with bottle on the top and actual on the bottom you would have three over two hundred and So based on that information when we cross multiply we end up with 800 3 * 2 is 6 there's going to be a test on rate ratios and proportions on Thursday I told y'all that yesterday today we're going to do the introduction of the day we're going to determine the scale for search and translate between scale models and then we're going to do Alex and acellus and I'm here to tell you A lot of people have zeros and today we're going talking about it's the same essential question as it was yesterday how can I solve mathematical and real-world problems involving geometric shapes and same standard GM one determine the scale factor and translate between scale mod an actual measurements of real-world objects and geometric figures using proportional releasing what's a proportional reasoning will be setting up a proportion and using either a table or a actual proportion to solve it okay please read what's in green to me I can careless real factor I can travel between actual magic awesome thank you thank you correctly apply knowledge to solve proportions a day we've done over how to solve proportions which is the reason why we're taking the test bad and I have to have to test in the next 10 days how many of you've ever played with models little Matchbox cars airplanes how many do you know what those are I have one that you I like them when they were metal now that they're plastic that to me that's not as much fun as the little metal ones were so do you think that the size of the little Matchbox airplanes are same size as the airplanes at the top no man no you don't think so yes, I don't think you are I agree there's theirs they're not the same first of all human fit in the little Matchbox planes okay Avenue you've ever played with Tonka trucks what is say it again what is a handkerchief the truck the yellow they go outside most boys have them you move dirt with them okay y'all missed some fun making roads and building Forts and Reese have a good time playing with us I was reading a book by RJ Letourneau and he back well he was one of the people that helped build the Hoover Dam and he invented the tractors where the big thing comes out front and Scoops the grounded is it he was like one of the major Engineers who created these kind of trucks and things is really cool story okay but cabulary words for today we are going to talk about scale scale model scale factor in scale drawing everybody knows what a Frayer Model is right it's where you draw the box and you put the word in one section you put the definition in another you given sample and given an example so that's called the Frayer Model and if you were here in class that's what we would be putting our vocabulary in okay everybody got it scale scale model scale factor scale drawing yes room Johnson yes ma'am and I can take a picture of it or do you want to just start with the definition yeah me too I want to take a picture of it to me okay I'm finished Johnson thank you I got it okay a scale drawing is a proportional two-dimensional drawing an object what's a two-dimensional drawing of an object it would be a piece of paper flat drawing two dimensional what's the difference between two-dimensional and three-dimensional dimensional you can actually like touch it like a model not flat good answer okay its dimensions are related to the dimensions of an actual object by a ratio called scale factor for example if a building if a drawing of a building has a scale factor of 1 to 87 this means that for each dimension of the drawing 12807 corresponding of the actual building again scale is written with the model on the top and the actual on the bottom so what they usually say is like 1 in equals 87 ft or 1 inch equals 87 in whatever their measurements are that they're using usually that one stands for one in and then the 87 depends on what laser measuring and if it's building I would go with feet questions no no no no ma'am thank you let me know when you finish writing everybody finished I'm just a scale model is a proportional three-dimensional object three-dimensional model of an object kind of like this is a wrecked and a scale is the ratio between two sets of measurements scales can be used to measure the same or different units which is also a rate or ratio same thing is the same thing as the photographs showed a scale drawing while I don't have the one with model trains I didn't put it on I need to take that off we had airplanes I took the trains out stop that rat snake everybody got it yes ma'am yes ma'am yes ma'am thank you if you noticed your room if you have you ever seen a blueprint anybody know what a blue plan is a graph about how something can get done it's a picture of where they want the walls to Dimensions where the windows go doors go so on a blueprint the room is 18 inches when in all actuality the room is 144 in okay so what would be my my first ratio it would be 18 over the 144 and for the other dimension it would be 13.5 / 108 okay yes and then we would say and this is why we are writing a ratio to find the scale factor come on my Technologies been acting weird this morning change minute ago I can get it to stop changing there we go okay 18 / 144 simplify 18 144 / 18 no not one so we simplify what's the number that most of us would have chosen to simplify with first if you had 18 / 144 what number would you automatically think to to simplify with first two exactly most people would have taken most people would have chosen to and if we chose to then we would have 9 / 6 D2 no 72 9 over 72 what something we can take out of 9/72 would it be 9 cuz how do you make 72/8 x 9 so if we took the nine and divided it by 9 we would end up with one and we took the 72 and divided by 9 we would get eight and that's how you simplify and get 1/8 questions write down these directions set up your rate ratio and see that is the directions on how to find the scale factor set it up simplify to directions so what would be the scale factor of the Third 13.5 / 1 / 8 anybody know what was the question what would be the scale factor of 13.5 / 1/8 13.5 / 1 / 8 Jay will win I did was I divided 31/8 by 13.5 to see how close I could get and the answer turned out to be eight so in order to simplify this the answer again would have been 1/8 so you set up your Ratio or rate and you simplify thoughts all the directions are questions a photograph was enlarged make a poster the poster is 20.5 in by 36 in the scale factor is 5 / find the actual size of the photograph Kay so obviously the first thing I need to do is set up my rate my proportion and then I need to cross multiply so if I'm going to cross multiply what is 36 * 1 3636 okay so now I have five equals 36 how do I get the coefficient to move to to become one and move to the other side see the third word down what do I do divide absolutely I divide so when I divide not changing 36 / 5 7 and then there goes 7.2 so you going to write a proportion to find the we're going to use cross products which is how I Got 5 I + 36 + 36 * 1 is 36 then because the V is a coefficient divided by the coefficient and that's how I got seven point again we're going to do the same thing State again I said can I write this down okay photographs tonight that's fine if you notice the photograph when you look at a little photograph that has two measurements the width and the length and so to find the width we set it up the 5/1 and because it's not the true it's the poster is going to be 20 / 5 so 20.5 / W so I again cross product 5 * w 1 * 20.5 / the coefficient and you end up with 4.1 so the actual photograph is 7.2 in long and 4.1 in so you set up your proportion cross product which we already we've already learned we already know how to do and we already know how to divide by the coefficient so when you solve a proportion cross multiply and divide not that difficult questions no ma'am thank you I'm finna smash Johnson Begin Again people were taking notes okay how to take notes good morning please remember in order to be marked present you need to write me a mess did you need to interact take a camera off do something sitting here like a bump on a log is not going to get you a present just let me know when you finish I'm done thank you you welcome anybody else not finished some get ready to move on okay Mary's father made her a doll house which was modeled after the blueprint of their home the blueprint is 24 in by 45 in with a scale factor of 1.5 over 1 what is the actual size of the dollhouse what do we do this is all we do is do you need help what do we do I'm Sorry Miss Johnson I had to help my sister what was the question my question was what do we do you find Elaine how do I find the link High proportion I put the 24 is a denominator and the W is a numerator okay then because it is a proportion I can either say one can become 24 by multiplying two 4 so what is 24 * 1.5 or I could cross multiply still have to multiply 1.5 * 24 + w x 1 anything * 1 itself so you either way you're just going to be multiplying with no dividing if you find the cross product 24 * 1.5 what's the answer 24 / I mean * 1.5 is 36 absolutely the answer is 36 so now we have to do the exact same thing with the 45 so I'm going to instead of using W I'm going to use linked linked over 45 equals 1.5 over 1 foot the 45 where the 24 is 4.45 * 1.5 + 25.45 * 1.5 is 67.5 so the doll house is 67.5 in long and 36 in wide and if you notice they always give us a key they always tell us which one is the numerator and which one is the denominator that way it's not something you have to guess okay on a road map how many of you've ever seen an Old Fashioned road maps the kind that you have to open up and fold and try and get back into order actually had those usually if you do serious when you stop at a rest area if a map of the state check the traffic say it again yes ma'am I seen one to okay yeah that was my job when I was a kid was to read the map the distance between Pittsburgh which is over you're on the Ohio Valley and Philadelphia which is all the way across Pennsylvania and by the Atlantic Ocean so they are absolutely across the state from each other is 7.5 in what is the actual distance between the cities if the scale is 1.5 in equals 60 miles so what's my proportion going to look like how did I tell you this discuss model over actual so what would be the what would be the proportion that we're setting up is a 7.5 a numerator denominator is it really only 7 in to New York to Philadelphia no ma'am so is it a numerator or denominator a denominator actual is denominator oh it's numerator numerator so my my my proportion is going to be like this and what are the two ways to solve a proportion X cross multiply and divide or can one become the other 1.5 become 7.5 yeah yes 36 by multiplying by 5 so if we multiply the numerator by 5 what do I have to do to the nominator * 5 * 60 * 5 300 correct yes ma'am okay so if we do it the cross product way this is what we're going to do and then we're going to multiply and then you divide by the coefficient cross X and the answer turns out to be 300 again there's two methods to solve a proportion can one become the other if so how and cross multiplying two by two methods okay what would be the scale factor what's the number you can take out of 8 24 + 8 220k so if I take two out is 8 / 1824 and I divide that by 2 so I end up with for over 912 can I see anything I can take out at 4 and 9:12 can I take out another two by two I end up with two sore 56 okay so is there anything I can still take out I got to / 456 that as low as I can go the answer to that would be no you can take out another 2 so the answer should be 1/2 to 8 what is the only thing I did I set it up and a simplified so when you're looking for the scale factor set it up simplified questions no ma'am yesterday you looked at similar shapes and is on the PowerPoint from yesterday also the review for the test on Thursday it was on the PowerPoint from yesterday so and everybody was supposed to go there and see it so based on that information Marcus hikes at a rate of 2 miles per hour if he hikes 6 and 1/2 hours how many miles will he hike what is he answer has it okay Laura paid $27 for three books if all three books cost the same how much did one book cost hours at $9 that would be the answer would be G the height of a scale drawing is going to be on there but it is a proportion the scale drawing of scale drawing is 18 cm and the scale is to 2 cm to 18 what is the actual height of the Tower yes the answer is B a group decides to go whitewater rafting the map that they have of the river has a scale of 3 in over 7 miles if the distance from the starting point to the endpoint of their trip is 15 in what's the actual distance again set up the proportion okay if you can type 1080 in 1080 words in 40 minutes how many words can you type in 1 minute 27 absolutely Harriet page 34 $349.65 for Seven Trees if each tree cost the same what is the cost for one tree Jay which one did you say G2G absolutely it took 3.3 hours for Mariana to drive 178.2 miles what was her average speed of the trip a say it again please I said a absolutely the answer was a the Jackson family drove 490 6 miles in 8 hours what is the unit rate in fraction form Beach unit rate what's the key to a unit rate unit rate must have a denominator of 1 of 1 G or is it h absolutely thank you which of the following ratios are proportional this is the one where you would cross multiply to see if they turn out the same Gabe if you cross multiply a you end up with nine and eight not staying do you would be correct for x 5 I'm sorry 5 * 9 45 and 3 * 15 is 45 so the answer was D find an equivalent ratio to 12 / 60 1/5 yes so the answer is H correct a factory worker can pack 150 games in 15 how many games can he pack in 1 minute 10 absolutely so the answer would be D match the proportion with its solution 3/2 equals say it again please 27 yes because two ton 2 * 9 is 18 so what is 3 x 9 I'm sorry what is yeah what would be 3 * 9 which would be 27 questions num Noms am okay I do have the answers to the following once these are the answers for everything for those of you who either weren't prepared or didn't get them you noticed Miss Johnson didn't give you any answers that you didn't help her so this is this is what the answers are and what they look like and if you notice the standards are P1 or P2 does know rp3 which way there's no tables in this but there will be tables on the test on Thursday but this is pretty much what it's going to look like was Johnson can you go back to the other slide with just the questions this one this one thank you Angie good morning okay for those of you who have finished and you are ready to go tell me something about scale factor how do I set up a scale factor what are the two steps to solve a scale factor tell me how do I say scale factor you can multiply and divide or simplify how about set up the rate or ratio and simplify that's it it's when you're looking for the scale model that you have to cross multiply and divide but in order for scale factor it's just set up the rate of a ratio in simplified okay where it's a little bit after 10 for those of you who started the the monthly assessment by the way guys we have to take another monthly assessment at the end of the month so we know need to get this done they've only given us what two more days three more days to work on this monthly assessment and they're going to close it so for those of you who want the grade for the monthly assessment instead of a zero cuz I'm going to make a note show not to do you need to get that finished before they close it and then I have some people who still want to do the USA test prep I have some people who have finished and when I checked the acellus or the Alex this morning yesterday 1234 since Sunday for people or since Saturday for people have done acellus or Alex have been checked us out okay so I can give you the code for USA test I mean for the monthly assessment for those of you not finished USATestprep go do it and move on. what is it you're looking for house in the house finished with the district assessment off of masteryconnect I got it yet I got it this morning thank you your grades already in the Gradebook you were one of the two people that actually did it on the Johnson say it again please there were two people who did it yesterday one was mr. gas and the other one was Miss Riley I did it cuz I checked it during prevention the only I only had three people out of all three classes that did it and two were from this class I'll go back and take a look okay I got those of you who are speaking to me or left me a message in chat I'm going to turn off the recording cuz I have to get that on my website

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