Bai giang Elip

1
Ellipse
2
Name: Nguyen Van Hien
Country: Vietnam
Topic: Ellipse
Level: 10
th
– High School
Students: Advanced ability class
Duration: 2 priods (90 minutes)
Learning environment: Full/one computer
Softwares needed for this lesson: Powerpoint, Sketchpad
 
Subject: Mathematics
3

Short Description:
- Give the definiton of ellipse.
- Give the normal equation of ellipse and students find the way
to prove the normal equation of ellipse in the text book.
- Problem 1,2,4 help students to know "How to build different
ellipses ?”
- Problem 3 helps students to expand ellipse equation.

Objectives of Lesson:       At the end of lesson, students can get to
know the definition of elipse and the normal equation of ellipse.

Methods of teaching and activities: Simulation and use of ICT

How ICT is used : Simulation and tutorial 


Objectives of ICT use : use of simulation to visualize a concept

Classroom management: Devide students into groups
4
Teacher’s activities Student’s activities
-Presentation and hyperlink to present the 
movement of planets orbiting around the sun
-Look at Screen
-Give questions, definition  and normal equation 
of ellipse 
-Answer
     - Give problems 
     - Give the guideline to students to build up 
the model of elipse in the problems
     - Give questions 
-
Practice on computer to draw the  
figures
-Answer and explain 
    - Feedback 
-Assessment
    -Give  homeworks 
    -Distribute the handouts 

Step-by-step:
Ellipse
Nguyen Van Hien
Le Qui Don High School, Quang Tri, Vietnam
Constructing an Ellipse

M
N
F
2
F
1
A
B
C
The locus of these two points is 
an ellipse.
Construct the two intersection 
points of the circles.
Construct another circle with 
center F
2
 and radius CB.
Construct a circle with center 
F
1
 and radius AC.
Given segments AB and two point F
1
,F
2
 . 
The moving point C is on the segments AB