Transcript Bell Ringer

Bell Ringer
I will not answer questions about the Bell Ringer. You will be
getting a new seating arrangement so keep your stuff together
and ready to move.
Solve each proportion.
You must show your work to receive credit.

STI Assessment is this Wednesday, Feb 25
◦ Bring something to do when you finish

Quiz on Thursday, Feb 26
◦ Sections:
 6.1
 6.2
 6.4
 6.5
 6.6
- Ratios
– Unit Rate
– Proportional and Nonproportional
– Solving Proportions
– Scale Drawing and Models
Announcements
Dear Detective,
Someone has robbed the National Bank of
Illuminations in Washington D.C. It is your
job to use the clues left by the
perpetrators to locate and apprehend the
robber. Your tools will be your power of
deduction and your mathematical
knowledge. Good luck cracking this case!
INVESTIGATION

Clue 1: The perpetrator is 15 cm tall in
the security camera image

Clue 2: 32 pounds of quarters were
stolen

Clue 3: The getaway car was a silver
1989 HN Cosine which travels 8 miles per
gallon of gas.
Clues
R drive > Key > Feb 23_27 > 2_23__6.6
Scale Drawings and Models
File > Save As > P drive > Math > Feb
23_27 > 2_23__6.6 Scale Drawings and
Models
Section 6.6 – Scale Drawings
and Models

https://www.youtube.com/watch?v=NQ8IuUkJJc

Note to Self: start at 52 sec
Video Clip Introduction

Scale Drawing/Scale Model – Used to
represent an object that is too large or
too small to be drawn or built at actual
size

Scale – Determined by the ratio of a
given length on the drawing or model to
its corresponding length on the actual
object.
Vocabulary

The lengths and widths of objects on a scale
drawing or model are proportional to the
lengths and widths of the actual object

Examples of Scales:
◦ 1 in = 3 ft
1 inch represents an actual distance of 3 feet
◦ 1 cm = 2mm

1 cm represents an actual distance of 2 mm
Scales are written so that a unit length on the
model is listed first.
Notes
Example 1
Determine the Scale
Example 2
Determine the Scale
Example 3 – Your Turn
Determine the Scale
A model car is 4 inches long. The actual car
is 12 feet long. What is the scale of the
model?
Example 4 – Your Turn
Determine the Scale
Joanna knows the distance to her grandmother’s
house is 21 miles. On a map, the distance is 5.25
inches. What is the scale of the map?
Class Work
When you turn in your class work, pick up
your homework and begin working quietly
on these problems.
Homework