Matchstick Puzzle #4

Move 3 sticks to form 3 squares

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

Growing Panda

Ever seen how a baby panda grows from the time it is only palm-sized till it is about 65cm long? Notice how the black and white colours of the panda appear beneath the skin pigments.

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!

Teachers' Day - A Heartwarming Day

Thank You!
To all the children of 3G06, thank you for making Teachers' Day 2008 a wonderful day as well as a day to remember that it's all worth the while. Thank you for all your cards, notes, poems and gifts! :) I want you to know that the time and effort you have taken to create/get/wrap them is very much appreciated.
I like all of them as it is not the size or price of the gift, but the thought that really counts. ♥ Not only is it encouraging to read your words of appreciation, it is also motivating to know that you wish to learn more. Through your cards and notes, it is touching to know that some young hearts' have been mended and influenced in the right way.

Here's a picture of the presents I have received - to share with all of you, my experience of Teachers' Day with 3G06 - a heartwarming one.

English - Jungle Adventure

An endangered species - The California Condor

http://www.youtube.com/watch?v=l4afbauvYBI

Watch as the condor cruises beautifully
http://www.youtube.com/watch?v=8MuBYn928cc

Observe how the wolves lope as they 'run'.

http://www.youtube.com/watch?v=OI5_daFSIZY&feature=related

.

Optical Illusion

Keep in mind that this is a static image. It is not animated in any way. However, as your vision moves back and forth, the middle area will seem to move towards the centre (contracting) and the outer edges will seem to be move away (expanding) from the centre. Also worth noting - if you fixate on a point in the centre and not move your eyes this anomalous motion will stop.

Sea Sickness
(Update: the web seems to have named this"The Purple Nurple Optical Illusion")
Walter Anthony(c)2007

WONDERS OF MATH - Fractals

This is a Fractal


The word FRACTAL was invented by Benoit Mandelbrot.
Fractals are interesting because as you zoom in closer, the pattern is just as beautiful and complex as when you start.

Besides beauty, fractals offer mathematical explanations about nature. If you look, you can see fractal patterns in landscapes, plants and more.


Fractals offer artists a way to create imaginary landscapes on the computer. Many movie backgrounds are created using fractal graphics.

More Links on Fractions

Apply your knowledge on Equivalent Fractions to play the game.
http://www.primarygames.co.uk/PG5/Fraction/freeze.html

Comparing Fractions

Play "DOLPHIN RACING" to test your skill in finding the largest fraction! =)
http://www.bbc.co.uk/skillswise/numbers/fractiondecimalpercentage/fractions/comparingfractions/game.shtml

Video on brainpop jr.
http://www.brainpopjr.com/math/fractions/basicpartsofawhole/

Video on brainpop
http://www.brainpop.com/math/numbersandoperations/addingandsubtractingfractions/

Putting up our best behaviour

We had visitors at our one and a half hour session! They are students from China and there are 15 of them. 15 of our friends were chosen to partner with them. We are a helpful bunch. While the friends who worked with the overseas guests tried their best to explain the words and terms in both English and Chinese, the rest of us helped each other along in getting logged on to the website we wanted and completed our tasks.

We had an interesting session on using online learning platform to complete our given assignments. We read a story on a folktale in India and did exercises like cloze passages, grammar and vocabulary. Some of us were excited as we scored well for the exercises but some of us were dissappointed as we did not do as well as we wanted. But as Ms Goh says, 'Never Give Up and we'll continue to soar towards the sky.'

We were also introduced to a game called the 'Lemonade Stand'. It allows us to decide on our inventory (the items we need for setting up the store), our recipe according to the weather and our price. At the end of the day, we will be able to see the number of customers we manage to satisfy. Hopefully, we can find out the secret recipe to a moneymaking lemonade stand!

http://www.coolmath4kids.com/

Fractions

Identify the NU MER A TOR and DE NO MI NA TOR

http://www.learningupgrade.com/mathup/index.htm

Lyrics to the song

We had one whole delicious apple pie
And 5 hungry people to share that pie
We divided that pie into
5 EQUAL slices
(ya ma, 5 slices)



My share was one slice of that pie
Of the 5 equal slices of the whole pie
I got ONE-FIFTH (1/5) of that pie
And that’s a FRACTION!
A PROPER FRACTION

A fraction has a DE-NO-MI-NA-TOR that goes below the line
Shows how many slices the whole pie has (Five!)
A fraction has a NU-MER-A-TOR that goes above the line
Shows how many slices I have (One!)
(Watch me now)

When the NUMERATOR is greater than the DENOMINATOR
That is what we call an IMPROPER FRACTION
(thirteen over four)13/4

Sometimes we have a whole number
Together with a fraction
A whole number and a fraction – a… a MIXED NUMBER…..
Three and one-fourth
And that’s a FRACTION!!!!..... (ya!)

(From learningupgrade.com)
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Let's see if we can form a fractions from shaded fractions strips

http://www.visualfractions.com/EnterFraction.html

... and now with fraction discs

http://www.visualfractions.com/EnterCircle.html