concept attainment model on magnetism
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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 ?