Saturday, April 9, 2011
Family in the attic
A family consisting of a boy Matti, his dad, his little sister and their grandma needs to get down from the attic before the roof falls in. The stairs are dark and they have only one flashlight and can't go down the stairs by more than 2 people at a time. They have 18 minutes altogether. For Matti it takes 2 minutes to go up or down the stairs, for dad 3 minutes, for little sister 5 and for grandma 7. How can they make it?
Wednesday, April 6, 2011
Brain teaser: what does "EGG + EGG" give you?
(The answer is: a PAGE!)
This is a reverse cryptogram. You must figure out what number is represented by each letter in the problem below:
EGG + EGG = PAGE
(From www.kidzone.ws/math)
This is a reverse cryptogram. You must figure out what number is represented by each letter in the problem below:
EGG + EGG = PAGE
(From www.kidzone.ws/math)
Fractions: a puzzle or a lotto?
The club teachers provided a superb visual training on fractions in form of a puzzle-lotto-like game (for which they spend many hours at home to prepare the material!)
Each student got a set of 5 circles to fill. Then there were a lot of multicolored parts available (1/2, 1/4, 1/8, 1/16). And each group of 5 kids had a dice to share. The dices were all different and they contained pictures of different fractions on each side (2/2, 3/8, 5/16, etc).
Tasks:
1. Get the own set of 5 wholes (circles) filled as soon as possible by throwing the dice in turns and getting the indicated fraction from the pool of the parts.
2. Given a random set of fractions (parts), how many wholes can one assemble?
Each student got a set of 5 circles to fill. Then there were a lot of multicolored parts available (1/2, 1/4, 1/8, 1/16). And each group of 5 kids had a dice to share. The dices were all different and they contained pictures of different fractions on each side (2/2, 3/8, 5/16, etc).
Tasks:
1. Get the own set of 5 wholes (circles) filled as soon as possible by throwing the dice in turns and getting the indicated fraction from the pool of the parts.
2. Given a random set of fractions (parts), how many wholes can one assemble?
Logic. What was first: a chicken or an egg? Or may be a balloon?
Chicken and eggs
Clues:
1. Scratchy laid twice as many eggs as the hen at C.
2. The hen at B laid three more eggs than Chooky.
3. One of the hens is called Pecky.
Question: What are the names of the chicken A, B and C? And what is the number of eggs it laid?
Balloons
There are four friends (Adam, Elizabeth, Peter, Sally) and each has a balloon.
From the clues below can you match each of them with their age and balloon?
The kids are aged 5,6,7 and 8 and one of them has a blue balloon.
Clues.
1. The six year old girl has a green balloon.
2. Adam has a red balloon and is older than Peter.
3. Elizabeth is 5 years old but her balloon isn't yellow.
Clues:
1. Scratchy laid twice as many eggs as the hen at C.
2. The hen at B laid three more eggs than Chooky.
3. One of the hens is called Pecky.
Question: What are the names of the chicken A, B and C? And what is the number of eggs it laid?
Balloons
There are four friends (Adam, Elizabeth, Peter, Sally) and each has a balloon.
From the clues below can you match each of them with their age and balloon?
The kids are aged 5,6,7 and 8 and one of them has a blue balloon.
Clues.
1. The six year old girl has a green balloon.
2. Adam has a red balloon and is older than Peter.
3. Elizabeth is 5 years old but her balloon isn't yellow.
Subscribe to:
Posts (Atom)