Warm Up – Discuss with a neighbor… A 6ft tall tent standing right next to a cardboard box casts a 9ft shadow. If the cardboard box casts a shadow that is 6ft long then how tall is it? How would you set up a proportion? What next?

Use pages in your TEXTBOOK to fill in as much as you can on scale drawings graphic organizer!

Scale Drawings EQ: How do proportions help us to find distances in scale drawings?

What is scale? It is the ratio between 2 sets of measurements. It is the ratio between 2 sets of measurements. – Enlargement = made bigger – Reduction = made smaller

What is a Scale Drawing? A smaller or larger representation of a real life object. A smaller or larger representation of a real life object. Real life examples… Real life examples…

To scale or not to scale?

Map Scale

Solving with Proportions (for scales and lengths) *Remember*Compare…OR Map distance Actual distance Scale length Actual length

Examples 1. Finding the scale (p. 372, Ex. 1A) The length of an object on a scale drawing is 5 cm, and its actual length is 15m. The scale is 1cm : ? m 2. Finding the actual length (p. 373, Ex. 2) Under a 1000mm:1mm microscope view a paramecium appears to have length 39mm. What is its actual length?

Mrs. Spanier’s Seating Chart Mrs. Spanier wants to make a seating chart for her classroom, but her classroom is very large and her paper is not. A.She knows that the without margins, the length of her paper is 10in., and the length of the back of her classroom is 35ft. The scale is 2in : _? ft B.Using your scale, find the approximate scale width of the classroom if the actual width is 30 ft.

● Rome ● Athens ● Sparta ● Carthage ● Babylon Famous Cities in Ancient History: ● Alexandria ● Persepolis ● Ninevah ● Troy ● Knossos

CityMode of Transportation Building to Visit Souvenir Trade Product Famous Person to Meet RomeRoadsColosseumRoman CoinsScipio AthensTriremeParthenonOlive OilSocrates SpartaBarefoot (march quickly) Military Barracks Iron RodsKing Leonidas CarthageShipAmphitheaterWheatHannibal BabylonWheeled CartHanging Gardens SundialsHammurabi AlexandriaShipLighthouseLibrary ScrollsAlexander the Great

CityMode of Transportation Building to Visit Souvenir Trade Product Famous Person to Meet PersepolisCamelThe Hall of 100 Columns BarleyDarius NinevahRiver BoatLibraryCuneiform Tablet Ashurbanipal KnossosShipKing Minos’ Palace FrescoMinotaur TroyChariotTrojan HorseIron Sword and Shield Paris and Helen

Rome Carthage Athens Sparta Knossos Alexandria Troy Ninevah Babylon Persepolis Ur

Measure the distance from New York City to your destination. Scale is 1½ inches = 600 km. NYC

Try this one! Oak Grove and Salem are 87 miles from each other. How far apart would the cities be on a map that has a scale of 5in : 29mi? **Set up a proportion** **Use cross products**