Judith Coutts
Westwood Regional Jr./Sr. High School

TOPIC:

LEVEL:

GSP PROFICIENCY:

CLASS TIME:

GSP STEPS NEEDED:

1. To Measure Length: SELECT the Points and Measure Distance or SELECT the Segment and Measure Length.
2. To Measure Angles: SELECT the three points with the vertex point in the middle. Measure Angle.
3. To construct a point on an object that can not be moved off of the object: SELECT the object and Construct Point on Object.
4. To Construct Perpendicular or Parallel lines: SELECT a line and a point which the new line should intersect. On the Construct Menu choose Parallel line or Perpendicular line.

VERIFYING THE REFLECTION POSTULATES UCSMP 4:3 (Page 173) Use of GSP begins with question 5.
SKETCH FOR QUESTION 5-7

• On File open New Sketch. With the LINE TOOL, DRAW line AB. With the POINT TOOL, DRAW points C and F. (Use the HAND TOOL to change the name of the point to F.)
• SELECT line AB. On the Transform Menu choose Mark mirror.
• SELECT Point C. On the Transform Menu choose Reflect . Repeat for point F. (The reflected images will be labeled C- Prime and F- Prime. Rename them D and E to make answering the questions easier).
• After constructing this figure, display the measures on the sketch. Answer the questions ON THE SKETCH with the HAND TOOL (Alphabet).
• ON FILE SAVE. Name the sketch UCSMP 4-3/5-7

FOR QUESTIONS 8 Through 11.
Open a New Sketch for Question 8 and use the same format as above, save as UCSMP 4-3 # 8. Open another New Sketch for Questions 9 and 10 and a New Sketch for Question 11. You should have 4 Sketches saved.

If time, use GSP for the Review questions 13 and 14 and for the Exploration question 22, otherwise use protractor and compass at home to complete the assignment.