PPT-Proportions and Scale Drawings

Textbook Pages 430435 Objective I can solve scale drawing problems using proportions Vocabulary Scale Drawing is the same shape but not the same size A map is a scale drawing The units are very important. An introduction. Ratios express . relationships. 1 dozen eggs . $2.50. 2 cups of flour. 1 cake. This expresses the relationship that 1 dozen eggs cost $2.50. . This expresses the relationship that 2 cups of flour are needed to make 1 cake. In this section we will be able to give real life examples of Fractions and Proportions. We will also learn how to solve and evaluate Fractions and Proportions in word problems.. Lesson plan goals. We are constantly using fractions everyday. Most of the time not really even noticing that we are using fractions. Have you ever checked the clock or a watch for the time? Guess what the time is a fraction of a day so any time you use a watch, clock. Communicating across disciplines:. Introduction. Blueprint (in construction)- composite of several plans assembled into a set of drawings. Transmits as much info. about a project that can be placed on a 2D view. . 3/28/17. How do we write ratios?. How do we write and simplify rates?. How do we decide whether two ratios/rates are proportional?. Today We’ll Discuss. Definition:. The . ratio. of two numbers . two-proportion inference tests. Chapter 22. Proportions observed in independent random samples . are. independent. Thus, we can add their variances. So…. The standard deviation of the difference between two sample proportions is . Difference Between Proportions. Sometimes we want to see if there is a significant difference between independent groups.. Control group vs. treatment group or placebo group. Men vs. women. Last year vs. this year. Yawn Seed?. Subject. Yawned?. Yes. No. Total. Yes. 10. 4. 14. No. 24. 12. 36. Total. 34. 16. 50. Trial. Number who yawned in yawn seed group. Number who yawned in no yawn seed group. Difference in proportions (yawn. All scale drawings . must . have a scale written on them. Scales are usually expressed as ratios.. Normally for maps and buildings the ratio:. Drawing length: Actual length. For maps the ratio is normally in the ratio:. Although most demos are implemented with word documents, this demo employs slides so that more details can be shown to the students as the drawing is constructed.. Rev: 20120913, AJP. Extracting Drawings. Lesson 6: Scale Drawings and Models The floor plan below is an example of a scale drawing. A scale drawing is a diagram of an object in which the dimensions are in proportion to the actual dimensions of the object. Warm Up. Solve the proportions for x.. 2. . 4. . 5. . 6. .  . In Pete’s blueprint the length of a side wall is 16 inches. . . Find the . actual length . of the wall. .. The back wall of the house is 33 feet long. . Section 1: . What is a scale drawing?. Section 2:. Using proportions to find unknown quantities involving scale drawings.. Section 3:. Reproducing a figure using a scale.. Section 4:. Finding area and perimeter of shapes . Outline of Class. Part 1 will be a . lecture style learning environment. where we will study the basics and see examples.. Part 2 will be . hands on learning . with real plan sets and real shop drawings where you will have to answer some basic questions that the answers can be found in the drawings themselves.. Students should use this scale to measure the body parts listed Students should use the determined 147unit148 to list their Determine 147rules148 for artworks from di15erent times or di15erent culture