By Juan Huerta



Computer Scientists are scientists that use a design methodology like the scientific method to collect and analyze data and apply this to building digital technologies. They are detail people that look at all variables that impact the output.


This lesson is designed to teach students to look at the details in a graphic. It uses the attributes tool in Paint to design the size of a graphic in proportion to the computer monitor. Students learn about pixels and resolution.


GOAL: Use Image/Attribute, Pencil, Line, Circle and Text Tools in Paint

  1. Set the canvas size attribute to 400 pixels by 300 pixels
  2. Draw a flower or star and your name using pencil tool
  3. Draw a flower or a star using the line and circle tool and the text box



  1. Show Menu Command


  1. Set width to 400 pixels and height to 300 pixels using a ratio of 4 : 3. Explain this is the proportions of a computer monitor. Note that graphics look better on a computer when using a ratio of 4 by 3.


  1. Compare and Contrast measurement units
    1. Select inches and centimeters buttons and back to pixels
    2. Change width to 1 and height to 1
    3. Change width to 100 and height to 100 ask shape and why
    4. Play with attributes until you understand canvas size in pixels
    5. Connect to concepts taught in math at the appropriate grade level


  1. Math Application Visual Guide - Fold paper to have a ratio of 4 by 3.
    1. Fold diagonally to make an isosceles triangle
    2. Fold up the extra paper at the bottom and tear off (lick and fold both ways)
    3. Fold paper in , in again; fold that paper in and again to make 16 squares when opened.
    4. Tear off the bottom 4 squares.
    5. What remains is 12 squares: 4 on one side 3 on the other
    6. Compare this with the 4: 3 computer monitor ratio by holding in front.


  1. Advanced Look at coordinate points
    1. Select pencil tool and move to each corner.
    2. Look at the coordinate point in the bottom of the window.
    3. Move pencil around and watch how the location is shown on the grid.
    4. Compare and contrast to GPS and finding locations on a map.