Tuesday, September 9, 2008

Matchstick Puzzle #4


Move 3 sticks to form 3 squares

Friday, September 5, 2008

Angle Illusion

Since we will be touching on angles real soon, here's some picture of how angles can affect our visual judgement. Angles is useful in many different ways: designing the exterior of buildings, planning the interior design and even in photography.

Inner Angle

Which angle of the inner "V" is smaller?



Judd Illusion

Is the red dot closer to the left or to the right?




Ponzo Illusion

Which vertical strip is longer?




Muller-Lyer Illusion

Which horizontal line is longer? The red or the green?




Answers:
Inner Angle: The angles of both inner "V" are the same.
Judd Illusion: The red dot is exactly in the centre.
Ponzo Illusion: They are both the same size.
Muller-Lyer Illusion: Both horizontal lines are of the same length.


Pictures from: http://www.wyrmcorp.com/galleries/illusions/angles.shtml

Wednesday, September 3, 2008

A puzzle to tickle the brain

Hello Children,

Hope you are making full use of the holidays. Mr Brainy (waving to you on the right) was just thinking of a matchstick puzzle that a family friend used - to entertain him many years ago. He is opening this puzzle to all in 3G06 and Ms Goh will give a prize to anyone who can come up with the solution on Monday, 8 September 2008. If you are not allowed access to matchsticks, you can always use toothpicks, satay sticks or ice cream sticks (clean ones, of course!) to replace.

This is what you have to do: -

1) Use 8 sticks to form the shape of the fish on your left (in the picture provided below).
2) You may move only 2 sticks to form the fish on the right (in the picture below).


Have Fun!