Identifying congruent shapes

Objectives

 * Identify congruent shapes
 * Understand shape and size

Estimated Time
30 minutes

Prerequisites/Instructions, prior preparations, if any
Prior knowledge of point, lines, angles, parallel lines, closed figures

Materials/ Resources needed

 * 1) Digital : Computer, geogebra application, projector.
 * 2) Non digital : Worksheet and pencil
 * 3) Image files :
 * 4) “Congruence class image1.jpeg”
 * 5) “Congruence class image2.jpeg”
 * 6) “Congruence class image3.gif”
 * 7) “Congruence class image4.jpeg”

Process (How to do the activity)

 * Use the image files to illustrate
 * How many things do you see that are same
 * Point out the things that are same.
 * Things that are same but different in colour
 * Things that are same but different in size
 * Things that are same that are same shape and size
 * Point out different shapes that are formed with existing shapes

Evaluation at the end of the activity
 * HW: Observe regarding shapes
 * If two figures are the same shape, are they the same size?
 * If two figures are the same size, are they the same shape?
 * Students should be able to identify same shapes that are of different sizes.
 * Students should be able to understand that different shapes can have same size
 * The teacher can ask students to think of many objects which are mass-produced and that are found to be exactly the same size and shape like pens, CD-roms, cars etc.