1. Do Now 3/10/11 Take out HW from last night. Take out HW from last night.  Text p. 299, #1 & 2 Copy HW in your planner. Copy HW in your planner.   Text p. 302, #12-40 multiples of 4, #41 & #43   Measurements of your bedroom (length & width) and at least 4 objects (bed, dresser, desk, etc…) Clear your desk and be ready to finish your quiz from yesterday. You will have 5 minutes. Clear your desk and be ready to finish your quiz from yesterday. You will have 5 minutes.

2. Concept Activity “Making a Scale Drawing” Read page 299 in the textbook “Making a Scale Drawing.” Complete the ‘Draw Conclusions’ questions #1 & #2.

3. Concept Activity “Making a Scale Drawing” 1)  sofa: 0.6 cm, 0.3 cm  table: 0.4 cm, 0.3 cm  piano: 0.5 cm, 0.2 cm 2)

4. Objective SWBAT make a scale drawing of an object

5. Section 6.6 “Scale Drawings” SCALE DRAWING- A two-dimensional drawing that is similar to the object it represents. SCALE MODEL- A three-dimensional model that is similar to the object it represents.

6. SCALE - the SCALE of a drawing, map, or model relates the dimensions of the drawing, map, or model to the actual dimensions. Write and solve a proportion to find the distance d between Cleveland and Cincinnati if the distance on the map is about 4.2 centimeters. Write and solve a proportion to find the distance d between Cleveland and Cincinnati if the distance on the map is about 4.2 centimeters. = 4.2 d 1centimeters 85 kilometers Cross products property d = 357 Simplify. 1 d = 85 4.2

7. A dinosaur model kits sold at a hobby store has a scale of 1 ft : 25 ft. A completed model of the dinosaur is 1.6 feet long. Estimate the actual length of the dinosaur. A dinosaur model kits sold at a hobby store has a scale of 1 ft : 25 ft. A completed model of the dinosaur is 1.6 feet long. Estimate the actual length of the dinosaur. Write and solve a proportion to find the length g of the dinosaur. =1.6 g 125 Cross products property g = 40 Simplify. 1 ∙ g = 25 ∙ 1.6 SOLUTION The actual length of the dinosaur is about 40 feet.

8. A model of a space shuttle has a scale of 1 : 52. The space shuttle has a wingspan of 78 feet. Find the model’s wingspan. A model of a space shuttle has a scale of 1 : 52. The space shuttle has a wingspan of 78 feet. Find the model’s wingspan. Write and solve a proportion to find the wingspan w of the space shuttle. = w 78 78 152 Cross products property 1.5 = w Simplify. 1 ∙ 78 = 52 ∙ w SOLUTION The wingspan of the model is 1.5 feet.

9. A scale drawing of a basketball court has a scale of 1 inch : 9 feet. The basketball court is 94 ft by 50 ft. Find the dimensions of the court in the scale drawing. L = 10 4/9in 1 ∙ 94 = 9 · L W = 5 5/9in 1 ∙ 50 = 9 ∙ W

10. A scale drawing of a basketball court has a scale of 1 inch : 9 feet. The free throw line is 15 feet from the backboard. How far is it in the scale drawing? b = 1 2/3in 1 ∙ 15 = 9 · b

11. SCALE - the SCALE of a drawing, map, or model relates the dimensions of the drawing, map, or model to the actual dimensions. Writing Scales without Units 1 in : 20 ft 1 cm : 5 m

12. Homework Text p. 302, #12-40 multiples of 4, #41 & #43 NJASK7 Prep