Able to explore reflections of familiar 2D shapes intuitively

Able to explore reflections of familiar 2D shapes intuitively.

Activity

While standing infront of a mirror, see your image.

Observe your image in the mirror when moving back and coming front to the mirror again. What do you infer?

1. Your image in the mirror is same size (bigger, smaller, same size)

2. When you go back, your image is moving backward (backward, forward)

3. The distance between you and mirror and the distance between you and your image is equal (equal, unequal)

4. When you come forward to the mirror, your images is moving forward (forward, backward)

5. When you raise your right hand, the image in the mirror looks like, left hand is raising. (right, left)

6. When you raise your left hand, the image in the mirror looks like, right hand is raising. (right, left)

7. Tick the image that shows the reflection of the given shapes.

Do it yourself:

* Take a mirror. Draw a line in the white paper by using a pencil and place it before the mirror.

* Take a paper draw 'D' and put it in front of the mirror. Observe the image of alphabet 'D' in the mirror.

* If we consider the alphabet 'D' as a “Object”. '' is the “image”. This event is called Reflection .

 * Now remove the mirror. The line drawn by pencil is called as the “reflection axis.”

Observe:

* The object and image in the mirror are equal in size.

* The object and image are at equal distance from the reflection axis.

* If direction of the object is left to right then the direction of the image on the mirror will be from right to left.

Try yourself

Draw some of your favorite shapes and draw its reflection images on a chart and show it to your teacher.

Let’s Enjoy it:

Take a paper in the shape of rectangle and fold it into two equal parts. Drop a thread in the ink-pot and drag it into the folded sheet. Now open and see the folded sheet. What do you see?

Are the designs on both the sides of the folded paper look alike?

Observe the changes of designs and express your ideas/results to your teacher.