OBJECTIVES: The students will be able to execute translation using a "marked vector" and a "marked angle."
PROCEDURE:
(1) Lecture
(2) Discussion/answer questions
(3) Individual Work on computers
LESSON/CLASSWORK:
I. REVIEW OF YESTERDAY'S WORK
A. What is a translation?
B. Method by coordinates
II. TRANSLATION BY VECTOR
A. What is a vector?
(1) Line segment
(2) Used to direct translation
B. Use of Transform Menu
(1) Will use "Transform", found on menu bar
(2) Will use "Mark Vector", from the drop-down box
(3) Will use "Translate", from the drop-down box
C. Steps
(1) Construct translation vector off to the side of screen
(2) Construct an object to be translated
(3) Highlight vector's endpoints (order matters)
(4) Click on "Transform" on the menu bar
(5) Click on "Mark Vector" from the drop-down box
(6) Highlight the object
(7) Click on "Transform"
(8) Click "Translate"
(9) Object now in new position! (hopefully!)
D. Results
(1) Check X'
a) Correct distance? Are all points of object the same distance from its prime point?
b) Correct position? Is the new object the correct angle from the original one?
(2) Practice
III. TRANSLATION BY ANGLES
A. Angles
(1) Off to side of screen as the vector
(2) Constructed of two vectors with one common endpoint, the vertex
(3) Directs the translation of the object
B. Use of Transform Menu
(1) Again, use "Transform" on menu bar
(2) Use "Mark Angle" instead of "Mark Vector" from the drop-down bar
(3) Again, use "Translate"
C. Steps
(1) Construct "angle" of determined degree-measurement to the side of screen
(2) Construct object to be translated
(3) Highlight angle's endpoints and vertex (order matters)
(4) Click "Transform"
(5) Click "Mark Angle"
(6) Highlight object
(7) Click "Transform"
(8) Click "Translate"
(9) Object now in new position
D. Results (refer above to II.D)
IV. WRAP-UP
A. Regroup
B. Review work
V. DISMISS