Introduction to GeoGebra: Points, lines and segments

Source: IT for Change

Objectives

1. To get acquainted with digital tool
2. To visualize geometrical figures with real life situations
3. Introduce children to the concept of points, line, ray and segments

Estimated Time

80 minutes

Refreshment activity related to language - 15 minutes

Introduction to Geogebra - 15 minutes

Hands-on Activities in Geogebra on points, lines and segments with demonstration - 30 - 40 minutes

Worksheet distribution - 5 minutes

Prerequisites/Instructions, prior preparations, if any

Prior understanding of Edges, corners and shapes

Materials/ Resources needed

• Digital : Computer, Geogebra application, projector.
• Non-digital : Worksheet and pencil.

Process (How to do the activity)

Teachers work:

To demonstrate -

1. How to on/off computer ?
2. How to open Geogebra application ?
3. How to use tools in Geogebra interface?
4. How to create and Save a file in Geogebra ?
5. How to plot and label points, draw line segments, draw line, draw rays ?

Students work:

1. Plot 10 points and Name it as A, B, C, D, E, F, G, H, I, J.

2. Draw 5 line segments - AB, BD, DE, FG, AH

3. Draw 5 lines - BC, EF, AE, DG, GI

4. Draw 5 rays - OB, FD, KL, BE, RC

Developmental questions of the activity

1. Why we use points? What does point indicate?
2. Are all points are in the same place?
3. Do you think you can draw a complete picture of a line? Why?
4. Can you measure the line?
5. A minimum of how many points are required to fix a line?
6. How many points can be plotted on a line?
7. How many segments can be on a line?
8. Give examples for points, rays, segments and lines in our day-to-day life.
9. How to represent line segments, rays and lines symbolically?

Refreshment activity :

Guess the word :

1. Grouping the students(Each group has maximum 3 students)
2. One student from each group pickup the word, and give 3 clues in a word to describe the vocabulary word that needs to be guessed by other group members
3. The word to be guessed should not be told by the participant to other group members.

Evaluation of the activity

Points and Lines Worksheet

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