Hands-on science (no lab required): after reading "Movie Magic", learn how the coordinate system helps animators make films.An animated movie is made up of a series of still images, or frames. These frames can flicker flicker: see woodpecker. flicker Any of six species of New World woodpeckers (genus Colaptes) noted for spending much time on the ground eating ants. onscreen--one following another--at a rate of 24 frames per second. Because the images appear so quickly, your brain can't separate the frames. To you, it looks like one continuous motion. PREDICT How is the coordinate system coordinate system Arrangement of reference lines or curves used to identify the location of points in space. In two dimensions, the most common system is the Cartesian (after René Descartes) system. helpful when creating animations such as a flipbook flip·book n. A small book consisting of a series of images that give the illusion of continuous movement when the edges of the pages are flipped quickly. ? YOU NEED ruler * pencil * 1 sheet of graph paper * black marker marker /mark·er/ (mahrk´er) something that identifies or that is used to identify. tumor marker * scissors scissors Cutting instrument or tool consisting of a pair of opposed metal blades that meet and cut when the handles at their ends are brought together. Modern scissors are of two types: the more usual pivoted blades have a rivet or screw connection between the cutting ends * 5 index cards * glue glue: see adhesive. glue Adhesive substance resembling gelatin, extracted from animal tissue, particularly hides and bones, or from fish, casein (milk protein), or vegetables. * stapler sta·pler 1 n. One who deals in staple goods or staple fibers. stapler Noun a device used to fasten things together with a staple Noun 1. PROCEDURE 1. Make one frame of your flipbook: Use a ruler and pencil to draw a square--10 units long by 10 units high--on a sheet of graph paper. 2. Label the bottom edge the x-axis and then label the left, vertical edge the y-axis. 3. Number the outside edge of both axes axes [L., Gr.] plural of axis. The straight lines which intersect at right angles and on which graphs are drawn. Usually the horizontal axis is the x-axis and the vertical one the y-axis. Called also axes of reference. with a scale from 0 to 10. 4. Repeat Steps 1 to 3 until you have created five separate frames. Then, number each frame from 1 to 5. 5. Use the "Coordinates Chart" (below) to draw each frame's image. For each frame, plot the corresponding x and y coordinates (x,y). Then, use a marker to connect the dots to complete each section of the figure's body. (For an example of Frame 1, see below.) The frames will show the stick figure in slightly varying positions. 6. Use scissors to cut out each square frame along its outline. 7. Align align (  līn),v to move the teeth into their proper positions to conform to the line of occlusion. the right and bottom edge of each frame with the corresponding edges of an index card. Glue each frame--picture-side up--onto the cards. Allow the glue to dry. 8. Stack the index cards in order from Frame 1--on top--to Frame 5. Staple the left side of the stack. 9. Hold the book's bound side in your left hand. Using your right thumb, flip rapidly through the pages to watch the figure jump. CONCLUSIONS Now did the coordinate system help you make a flipbook? Explain. TAKE IT FURTHER: Think of a simple action such as a person waving. Then, animate it in a flipbook. For more animation tips, visit: www.nga.gov/kids/stella/ activityflip.htm
COORDINATES CHART
Frame 1 Frame 2 Frame 3
HEAD (x,y) A. (7,7) B. (6,8) (7,8) (6,9) (7,9) (6,10)
C. (5,7) D. (6,6) (5,8) (6,7) (5,9) (6,8)
BODY A. (6,6) B. (6,3) (6,7) (6,4) (6,8) (6,5)
LEFT LEG A. (6,3) B. (5,0) (6,4) (3,2) (6,5) (3,5)
RIGHT LEG A. (6,3) B. (7,0) (6,4) (9,2) (6,5) (9,5)
LEFT ARM A. (6,5) B. (5,4) (6,6) (4,6) (6,7) (5,7)
C. (5,3) (4,8)
RIGHT ARM A. (6,5) B. (7,4) (6,6) (8,6) (6,7) (7,7)
C. (7,3) (8,8)
Frame 4 Frame 5
HEAD (x,y) (7,8) (6,9) (7,7) (6,8)
(5,8) (6,7) (5,7) (6,6)
BODY (6,7) (6,4) (6,6) (6,3)
LEFT LEG (6,4) (3,2) (6,3) (5,0)
RIGHT LEG (6,4) (9,2) (6,3) (7,0)
LEFT ARM (6,6) (4,6) (6,5) (5,4)
(5,3)
RIGHT ARM (6,6) (8,6) (6,5) (7,4)
(7,3)
* Connect the dots for each body section in the alphabetical order the
coordinates are given.
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