Fridge magnets

Magnet attracting iron nails

Leaves on the tree

Crane attracting metal

Pen and a book

Metal clips attracted to the object

Pair of shoes

Pencils

Wood

Crane using a magnet to separate scrap

Paper Boats

U-clips in the attracted to the box

Separate the above examples into two groups positive and negative examples

What are the essential characteristics of positive examples ?

How are the positive examples different from the negative examples ?

Define the concept in your own words

A strong attractive force between two objects and acting on metallic objects

and not on some objects.

Steel ruler and pencil

Magnet for the fridge door

Handshake

Coins on a table

Why are some examples negative

Why are some examples positive

State some more positive examples of your own

What came to your mind when you first came across the positive and negative examples

Did any example confuse you ?