The document describes a brainstorming competition called "Brain without limits" organized by Natasha Dzhurkova in Lisbon, Portugal. The competition is divided into 5 rounds involving logic puzzles, visual puzzles, and hands-on tasks for teams of students to solve within time limits. It aims to challenge students' problem solving and thinking without limits. The competition engages both student teams and the audience with puzzles. It can integrate different school subjects and be organized for one or multiple classes.

2. The Universe is lightened by the Sun, and the Man- by knowledge.
The strong will defeat one person, the knowledgeable- a thousand people.
The competition “Brain without limits” was created and presented by
Natasha Dzhurkova –SU Ekzarh Antim I, Kazanlak, Bulgaria
during the Teaching/Training/Learning event in Lisbon, Portugal.
It aim to provoke students and to show them, that they have reserve abilities for
resolve problems and different tasks, to show them that their mind has no limits to develop.
The competition is organized as a brainstorming activity and has no need for students
to be prepared in advance. Some of the tasks are addressed to their reasonability,
logical thinking, some tasks need to be resolved in short time,
and to resolve other tasks they need to use their knowledge accumulated during the years.
The competition is creative approach for teaching and learning all school subjects and demonstration
how different school subjects can be integrated.

3. Natasha Dzhurkova-
SU Ekzarh Antim I, Kazanlak, Bulgaria,
Coordinator of the project
«Creative Teaching and Learning»,
wrote the script and selected the tasks for
the competition «Brain without limits»

4. The competition can be organized for one class or
can be organized for 2 or 3 classes.
The students are divided by teams of 5 or 6 students.
The contest consists of five rounds. Each team has 5 min for each task.
The teams write the solutions of the tasks on the sheets on the table.
When the team is ready, one of the members raises their hand.
The team gives the assistants the solution and they bring it to the jury for assessment.
Each team is allowed to only one hint during the whole contest.
It can be used when the team wants it.
The hints can be given by classmates, class teachers or someone from the audience.
Asking for a Hint is shown by raising a hand.
You can stay by the person who gives the hint 20 seconds.
The jury assess the solutions with points from 1 to 6.
If a team is ready before the time limit is over, they can receive extra points from the jury.
During the contest there will be a game with the audience.
The audience can see the condition of the tasks on the screen.
If a member of the audience solve the task before the teams, they raise their hand.
There will be awards for everyone who has a right solution.

6. Our Jury: Rachel Aimee- Astor College for the Arts, Dover, England;
Stanimira Valcheva-SU Ekzarh AntimI, Kazanlak, Bulgaria;
Ana Mello- Escola Secundaria Maria Amália Vaz de Carvalho, Lisbon, Portugal;
Tobias Söderström From Bromma gymnasium, Bromma, Sweden

7. Round 1
You want to boil a two-minute egg.
If you only have a three-minute timer
(hourglass), a four-minute timer and a
five-minute timer can you boil the egg for
only two minutes?

11. The Answer is :
Once the water is boiling, turn the three-minute timer
and five-minute timer over.
When the three-minute timer runs out,
put the egg in the boiling water.
When the five-minute timer runs out,
two minutes have elapsed and it is time take
the egg out of the water. You don't need the
four-minute timer for this riddle.

12. jdsu
Round 2
On the grounds of
the tree pictorial
equations,
you have to find the solution
of the fourth one.
The audience can
see the pictorial
equations on the screen

15. jdsu
Round 2
2211
The Answer is:
From the first equation,
we calculate that "horse" = 10.
From the second, that two
"horseshoes" are equal to 4,
and one - to 2.
From the third - two "boots“
are 2 and one - 1. Note the
line Of the actions in the fourth
expression: Horse (10),
multiply in horseshoe (2)
and add a boot (1).
We get 21
21

16. Round 3
Each team received closed box.
In the box they will find the condition
of the next task and
some equipment to solve it.
The box is full of different objects.
The students have to guess what things in
the box will help them accomplish the task

17. Round 3
Put the egg inside the bottle without breaking it.
You can use the available materials,
which you will find in the mysterious box.
You have no right to damage the egg.
Must remain whole.
In the boxes there are a scissors, match sticks,
a hammer, piece of cotton,
a piece of paper, a box of matches and glue.

24. The teams receive 3 white coins and 3 yellow
and drawn cards.
The assistants are going to each team
and arrange the coins
on the embossed card as shown in the example
Round 4

25. Round 4
You have to put the white coins where the black ones
were and vice versa.
The rule is: you are allowed to move a coin
only forward with one square
and it can skip one coin only if there is
an empty square. A move backward is not allowed.

27. TASK 2
1
2
3
4
A
N
S
W
E
R

28. Round 5
What goes up must
come down right?
Well try bending the rules a little
with a cup of water
that stays inside the glass when
held upside down.
What you'll need:

29. A glass filled right to the top with water
A piece of cardboard. Put the cardboard
over the mouth of the glass, making sure
that no air bubbles enter the glass as you
hold onto the cardboard.
Turn the glass upside down (over a sink or
outside until you get good).
Take away your hand holding the
cardboard.
Round 5

33. Your task is to explain-
What's happening ?
Why the water is standing
in a downwardly turned glass ?
Round 5

34. Answer is:

35. Task for all participants- teams and audience, teachers
A king has no sons, no daughters, and no queen.
For this reason he must decide who will take the throne after
he dies. To do this he decides that he will give all of the
children of the kingdom a single seed.
Whichever child has the largest, most beautiful plant will earn
the throne; this being a metaphor for
the kingdom. At the end of the contest all of the children came to
the palace with their enormous and beautiful plants in hand.
After he looks at all of the children's pots, he finally decides that
the little girl with an empty pot will be the next Queen.
Why did he choose this little girl over all of the other
children with their beautiful plants?

36. The king gave them all fake seeds and the
little girl was the only honest child who
didn't switch seeds
Answer is :

37. Questions towards the audience.
While the teams solve the task with
the egg and the coins,
and while the jury judges the correctness
of the answers,
a Game with the audience

38. You can see me in water,
but I never get wet.
What am I ?
reflection

39. What 4-letter word can be
written forward,
backward or upside down,
and can still be read from
left to right ?
noon

40. What belongs to you
but others use it more than you do?
Your name

41. I’m not an air plane,
but I can fly through the sky.
I’m not a river, but I’m full of water.
What am I?
cloud

42. Is it legal for a man in
California to marry
his widow's sister?
Why ?
No, he is dead

43. Feed me and I live,
yet give me a drink and I die .
What am I ?
fire

44. An old man wanted to leave all of his money
to one of his three sons,
but he didn't know which one he should give it to.
He gave each of them a few coins and told them to
buy something that would be able to fill their living room.
The first man bought straw, but there was not enough
to fill the room.
The second bought some sticks, but they still did
not fill the room.
The third man bought two things that filled the room,
so he obtained his father's fortune.
What were the two things that the man bought?
matches

45. What is it that no man ever yet did see,
which never was, but always is to be?
tomorrow

46. I cover what's real;
hide what is true,
but sometimes bring out the courage in you.
What am I?
Make up

47. Mr Brown was killed on Sunday afternoon.
The wife said she was reading a book.
The butler said He was taking a shower.
The chef said he was making
breakfast. The maid said she was folding clothes,
and the gardener said he was planting tomatoes.
Who did it? The chef

48. The more there is,
the less you see.
What is it ?
darkness

49. Two people are born at the same moment,
but they don't have the same birthdays.
How could this be?
Different time zone

50. A woman is sitting in her hotel room
when there is a knock at the door.
She opened the door to see a man whom
she had never seen before.
He said "oh I'm sorry, I have made a mistake,
I thought this was my room."
He then went down the corridor and in the elevator.
The woman went back into her room
and phoned security.
What made the woman so suspicious of the man?

51. Thank you for watching
Natasha Dzhurkova
SU Ekzarh Antim I, Kazanlak, Bulgaria