Unit 10 - Working with Scale Drawings Day 1

1
Unit 10 - Working with Scale Drawings Day 1
Lesson Practice Teachers Resources
2
Labs and Research

• Other Labs Dino, Scale Model/Drawing of School,
  Drawing With a Grid, Measuring on a Map, Drawing
  and Reading Prints-Mechanical / Architectural,
  Prints, Pictures, Photo Enlargements, Pattern
  Enlargements
• Quizzes
• Careers using Scale Drawings or scaling in
  general
• Defined by Wikipedia

3
Video Examples

• http//www.youtube.com/watch?vCv7_CVD6_YkNR1
• NASA
• http//www.youtube.com/watch?vSeUMDY01uUA
• Ferrari
• http//www.youtube.com/watch?vrUSTXUis_ysfeature
  related
• http//www.youtube.com/watch?v6z66AT1Ap2g
• Earth Drawings
• http//www.youtube.com/watch?vhlUbZhsxcWI
• Scale Tank
• http//www.flash-gear.com/puzzle/
• Scale puzzle

4
Evaluation of Understanding
5
Measuring the Scale Drawing
6
Grid Drawing

• Grid Drawing - Copying Pictures Using a Grid
  Squares
• From Helen South,Your Guide to Drawing /
  Sketching.Choosing a Picture and Grid Size
• When selecting a picture to copy, make sure it is
  large and clear. You might wish to photocopy or
  do a computer printout rather than drawing
  directly on a photograph. You need an image with
  clear lines and edges - a blurry image makes it
  difficult to find a line to follow. Decide on
  your grid size. If the grid is too large, you'll
  have to do too much drawing in between each
  square. If the grid is too small, you'll find it
  difficult to erase, and it can get very
  confusing. There is no definite rule, as the size
  of your picture and the subject can be so varied
  - but something from one inch to half an inch
  will be about right. You don't have to divide
  your photo up mathematically - if the last
  squares are only half filled, that's fine.

7

• Measure up your grid, drawing the lines with a
  fine black pen. Dark grayscale photographs may
  need a white gel pen to show up. You can also use
  a computer to add a grid to your picture, as in
  this example - using the 'grids and rulers' in
  your graphics program as a guide, and drawing
  horizontal and vertical lines in a contrasting
  color. Copy the grid onto your drawing paper,
  using a sharp, B pencil (medium hardness) and a
  light touch, so that you can erase it easily.
  Beginners should draw it the same size as the
  grid on the original picture. Once you're
  comfortable with the process, you can use larger
  grids to scale up drawings.
• The best way to learn this process is to try it -
  why not print this picture out and have a go?

8

• A Few Squares at a Time
• When copying the picture, use spare sheets of
  paper to cover some of the image, so you can
  focus on a few squares at a time. This is
  especially useful for large pictures which can
  become confusing. Place your drawing and the
  original picture close together, so you can look
  directly from one to the other.

9

• Following Shapes and Using Negative Space
• Look for clear edges in your picture. With this
  example, you can clearly see the outline of the
  jug against the background. Notice where the
  shape crosses the gridline - this is the
  reference-point that you can use. Don't try to
  measure where it is on the grid, but rather judge
  its position (halfway up? one-third?) and find
  the same spot on your drawing grid. Follow the
  shape, looking for where the line next meets the
  grid. The area shaded gray shows a NEGATIVE SPACE
  formed between the object and the grid. Observing
  these shapes can help you follow the shape of the
  line. Notice how the gray space looks fairly
  triangular, with a couple of chunks taken out -
  that makes it easy to copy.

10

• The Finished Grid Drawing
• The completed grid drawing will include all the
  major lines of the object - outline, important
  details and clear shadow shapes. If you want to
  indicate the position of subtle details, such as
  a highlight, use a light dotted line. Now you can
  carefully erase your grid, patching up any erased
  parts of your drawing as you go. Then you can
  complete it as a line drawing, or add shading. If
  you need a very clean surface, you might want to
  trace your completed sketch onto a fresh sheet of
  paper.

11
(No Transcript)
12
COUNTDOWN ChallengeA Proportional Fish Story

• COUNTDOWN Challenge
• A Proportional Fish Story
• Architects use proportions to build scale models
  so projects can be visualized before theyre
  made.
• As a class we will build a scale model, one
  example is this fish lab, work through the
  worksheet for a visual scale.
• Great White Shark Orca Whale White Shark Blue
  Whale