PUZZLE 6: 14th-20th December (to be e-mailed by the 21st December)
POSTED BY IES CAMPANAR
FOUR DIGITS
This week your task is to try and find a four-digit number (abcd) so that when writing a decimal comma* between the second and the third digit (ab,cd) we get a number which is the mean or arithmetic average of the two digits which are left on both sides of the decimal comma. *decimal comma or decimal point (ab.cd)
SOLUTION
Mentally:The numbers are 49 and 50, because (49+50)/2 = 49,50Mathematically:If the number is abcd:((10a + b) + (10c + d))/2 = 10a + b + c/10 + d/10050 ( 10a + b) + 50 (10c + e) = 1000a + 100b + 10c + d490c + 49d = 500a + 50b49(10c + d) = 50(10a + b)The only solution is 49 and 50.
Monday 14 December 2009
Monday 30 November 2009
FORTNIGHT'S PUZZLE 5
PUZZLE 5: 30th November-6th December (to be e-mailed by the 7th December)
POSTED BY IES CAMPANAR
THE AIRCRAFT
A light aircraft has just flown 400 kilometres. The aircraft covered the first 100 kms at a speed of 150 kph, the next 100 at 300 kph, the following 100 at 450 kph, and the last 100 at 600 kph.Can you figure out the average speed of the aircraft on its 400 kilometres journey?
SOLUTION
t = e/v (t = time, e = space, v = velocity)t1 = 100/150 = 2/3t2 = 100/300 = 1/3t3 = 100/450 = 2/9t4 = 100/600 = 1/6T = 2/3 + 1/3 + 2/9 + 1/6 = 25/18v = E/ T = 400 : (25/18) = 288 kph
POSTED BY IES CAMPANAR
THE AIRCRAFT
A light aircraft has just flown 400 kilometres. The aircraft covered the first 100 kms at a speed of 150 kph, the next 100 at 300 kph, the following 100 at 450 kph, and the last 100 at 600 kph.Can you figure out the average speed of the aircraft on its 400 kilometres journey?
SOLUTION
t = e/v (t = time, e = space, v = velocity)t1 = 100/150 = 2/3t2 = 100/300 = 1/3t3 = 100/450 = 2/9t4 = 100/600 = 1/6T = 2/3 + 1/3 + 2/9 + 1/6 = 25/18v = E/ T = 400 : (25/18) = 288 kph
Wednesday 18 November 2009
Monday 16 November 2009
FORTNIGHT'S PUZZLE 4
PUZZLE 4: 16th-22nd November (to be e-mailed by the 23rd November)
POSTED BY IES CAMPANAR
A FOOTBALL
A polyhedron with the shape of a football has 32 sides: 20 of them are regular hexagons and 12 are regular pentagons, as you can clearly see in the picture above.How many vertices and edges does this solid have?
SOLUTION
The football has as many vertices as the pentagons have: 12x5=60. As for the number of edges, which are counted twice, there are as many as the edges of all the polygons: (20x6 + 12x5)/2 = 180/2 = 90.
POSTED BY IES CAMPANAR
A FOOTBALL
A polyhedron with the shape of a football has 32 sides: 20 of them are regular hexagons and 12 are regular pentagons, as you can clearly see in the picture above.How many vertices and edges does this solid have?
SOLUTION
The football has as many vertices as the pentagons have: 12x5=60. As for the number of edges, which are counted twice, there are as many as the edges of all the polygons: (20x6 + 12x5)/2 = 180/2 = 90.
Monday 9 November 2009
Monday 2 November 2009
FORTNIGHT'S PUZZLE 3
PUZZLE 3: 2nd-8th November (to be e-mailed by the 9th November)
POSTED BY IES CAMPANAR
CHESS
Malcom and Cynthia were playing chess. They each played five games. Each of them won the same number of games and there were no draws. How is this possible?
SOLUTION
They were playing with different people
POSTED BY IES CAMPANAR
CHESS
Malcom and Cynthia were playing chess. They each played five games. Each of them won the same number of games and there were no draws. How is this possible?
SOLUTION
They were playing with different people
Monday 19 October 2009
FORTNIGHT'S PUZZLE 2
PUZZLE 2: 19th-25th October (to be e-mailed by the 26th October)
POSTED BY IES CAMPANAR
IN A RESTAURANT
A man got up from his table in the restaurant and left a note for the waiter: 1004180. What does it mean?
SOLUTION
I owe you nothing for I eat nothing
POSTED BY IES CAMPANAR
IN A RESTAURANT
A man got up from his table in the restaurant and left a note for the waiter: 1004180. What does it mean?
SOLUTION
I owe you nothing for I eat nothing
Monday 5 October 2009
FORTNIGHT'S PUZZLE 1
PUZZLE 1: 5th-11th October (to be e-mailed by the 12th October)
POSTED BY IES CAMPANAR
MISSING ITEM
The following is a series in which one item is lacking: OTTFFSSEN. Can you provide the missing item?
SOLUTION
one, two, three, four, five, six, seven, eight, nine, TEN
POSTED BY IES CAMPANAR
MISSING ITEM
The following is a series in which one item is lacking: OTTFFSSEN. Can you provide the missing item?
SOLUTION
one, two, three, four, five, six, seven, eight, nine, TEN
Wednesday 16 September 2009
USEFUL LINKS
GENERAL RESOURCES
www.bbc.co.uk/worldservice/learningenglish
www.mansioningles.com
www.woodlands-junior.kent.sch.uk/customs/
www.saberingles.com.ar
www.learnenglish.org.uk
www.free-english.com
www.macmillanenglish.com/resources
www.usingenglish.com
www.anglik.net/teflsongs.htm
BIOGRAPHIES, SONGS, VOCABULARY AND PHONETICS
www.britishcouncil.org/learnenglish-central-songs-current.htm
GRAMMAR AND VOCABULARY PRACTICE THROUGH GAMES
www.free-english.com/english/Games.aspx
www.isabelperez.com
FALSE FRIENDS
www.jccm.es/edu/eoi/almansa/martin_web/ff.html
MONOLINGUAL DICTIONARIES
www.websters-online-dictionary.org/
BILINGUAL DICTIONARIES
www.wordreference.com
www.bbc.co.uk/worldservice/learningenglish
www.mansioningles.com
www.woodlands-junior.kent.sch.uk/customs/
www.saberingles.com.ar
www.learnenglish.org.uk
www.free-english.com
www.macmillanenglish.com/resources
www.usingenglish.com
www.anglik.net/teflsongs.htm
BIOGRAPHIES, SONGS, VOCABULARY AND PHONETICS
www.britishcouncil.org/learnenglish-central-songs-current.htm
GRAMMAR AND VOCABULARY PRACTICE THROUGH GAMES
www.free-english.com/english/Games.aspx
www.isabelperez.com
FALSE FRIENDS
www.jccm.es/edu/eoi/almansa/martin_web/ff.html
MONOLINGUAL DICTIONARIES
www.websters-online-dictionary.org/
BILINGUAL DICTIONARIES
www.wordreference.com
Tuesday 15 September 2009
LIST OF PROJECTS
Dear pupils,
As you have been informed you are presented here with a list of projects from which you will have to choose one. The project will be carried out in groups of 4-5 and will be handed in and presented in December.
Remember that the project will account for a 10% of the final mark in the first term!
Good luck!!
-LIGHTS, CAMERA AND ACTION:
In the first part of this project you will have to choose one film and analyze it.
In the second part you are expected t create a PARODY of a film genre. (This video can be either presented in video or it can be done (as a play).
-ENGLISH SPEAKING COUNTRIES:
In the first part of this project you will have to talk generally about the different countries in which English is spoken.
In the second part you will have to choose one of those countries and talk more specifically about its geography, food, customs, emblems and its culture in general.
-PRESENTING A SCRAPBOOK:
For the first part of this project you need to create a scrapbook (this is a decorated album in which you can stick photographs, cuttings, leaflets, tickets from an important trip in your life)
For the second part you will have to present the scrapbook to the rest of the class explaining the materials you have used and describing the place reviewed.
As you have been informed you are presented here with a list of projects from which you will have to choose one. The project will be carried out in groups of 4-5 and will be handed in and presented in December.
Remember that the project will account for a 10% of the final mark in the first term!
Good luck!!
-LIGHTS, CAMERA AND ACTION:
In the first part of this project you will have to choose one film and analyze it.
In the second part you are expected t create a PARODY of a film genre. (This video can be either presented in video or it can be done (as a play).
-ENGLISH SPEAKING COUNTRIES:
In the first part of this project you will have to talk generally about the different countries in which English is spoken.
In the second part you will have to choose one of those countries and talk more specifically about its geography, food, customs, emblems and its culture in general.
-PRESENTING A SCRAPBOOK:
For the first part of this project you need to create a scrapbook (this is a decorated album in which you can stick photographs, cuttings, leaflets, tickets from an important trip in your life)
For the second part you will have to present the scrapbook to the rest of the class explaining the materials you have used and describing the place reviewed.
Friday 26 June 2009
Wednesday 24 June 2009
Saturday 6 June 2009
Monday 18 May 2009
Thursday 23 April 2009
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