Investigation 4Reflecting

Mrs. Tweedie 2010

Where do you find mirrors?

What are they used for?

Part 1: Mirror Images

What can you see with a mirror that you can’t see without one?

Part 1: Mirror Images

Caution: Be very careful with the mirrors.

Light reflects, or bounces off the mirror to your eye. What you see in the mirror is a mirror image.

Part 1: Mirror Images

Images are representations of real objects. Mirror images look real, but are not.

Part 1: Mirror Images

What other kinds of images can you think of?

Part 1: Mirror Images

Photographs, movies, television, drawings, and mirror reflections are all images.

Part 1: Mirror Images

Mirrors can change the appearance of objects and pictures.

Part 1: Mirror Images

Introducing Symmetry

Part 1: Mirror Images

I will fold this paper exactly in half and open it. This folded line is in the middle of the paper. Both sides of the paper are exactly the same. They are mirror images of each other. The sides are symmetrical. The fold is a line of symmetry because the two sides are exactly the same.

Introducing Symmetry

Part 1: Mirror Images

Mirrors can be used to find lines of symmetry. If a mirror is placed on an object and the object looks exactly the same, the mirror is on a line of symmetry.

Part 1: Mirror Images

More lines of symmetry

Part 1: Mirror Images

Use your mirrors on the Mirror Images sheet to produce the images described on the sheet.

Part 1: Mirror Images

Use your mirrors on the Mirror Images sheet to produce the images described on the sheet.

Part 1: Mirror Images

circlesan 8

a heart a football

a cowboy hat

a kitetriangl

e an arrow

Part 1: Mirror Images

Symmetry in the letters of the alphabet.

Use your mirrors on the Mirror Images sheet to produce the images described on the sheet.

Part 1: Mirror Images

Sometimes objects can look very strange until they are viewed as a mirror image or with their mirror image.

Part 1: Mirror Images

Use your mirrors on the Mirror Puzzles sheet to figure out what the messages on the puzzles say.

Part 1: Mirror Images

A representation or likeness of an object is an image; it looks real but it is not.

Part 1: Vocabulary Words

Vocabulary Words

An image produced by a mirror is a mirror image. Mirror images are always reversed either right to left or upside down.Mirror images are the result of reflection of light. Light bounces off a smooth surface to form a mirror image.Symmetry is the arrangement in which the parts on opposite sides of a center line are the same.

Today we will put your mirrors to work for you. We will make a rearview mirror for your desk.

Part 2: Seeing Around Corners

Seeing Around Corners

Design your own rearview mirror. Get:

1. Mirrors-4

2. Mirror Clips-4

3. Lump of Clay

Part 2: Seeing Around Corners

Materials:

Sometimes it is desirable to see over, around, or through objects in the path of view. Work together to use mirrors to see “through” a book placed on edge in the center of a desk.

Part 2: Seeing Around Corners

What do you know about periscopes? Today we are going to make a periscope using the die-cut cardboard and some mirrors.

Part 2: Seeing Around Corners

I will demonstrate how to put your periscope together.

Part 2: Seeing Around Corners

Teacher Reads: Making Mirrors

A rearview mirror allows you to see behind you.

Part 1: Vocabulary Words

Vocabulary Words

A periscope is a tool made from two mirrors and is used to see things that are not in a direct line of sight.

Part 3: Mirror Inventions-Kaleidoscopes

Part 3: Reflecting

Today we are going to make kaleidoscopes. A kaleidoscope is a visual toy that uses three mirrors to create multiple images.

These images were made with a kaleidoscope.

Part 3: Reflecting

I will show you how to make a kaleidoscope by taping three mirrors together.

Part 3: Reflecting

Try to invent “cool” things to see in your kaleidoscope.

Part 3: Reflecting

A kaleidoscope is a visual toy that uses three mirrors to create multiple images.

Part 1: Vocabulary Words

Vocabulary Words