Ralleia Experimental Primary Schools
Problem Solving
Teachers: Androniki Grangou  Petraki Evangelia
Classes: mixed group of students (1012 years old)
1st PROMBLEM
The shape of the schoolyard is a rectanglular. It's length is 6 meters and it's width is 4 meters. We are going to plant small trees all round the yard. The distance between the trees will be 2 meters.

How many trees are we going to plant?

If every tree costs 1,25 euro how much money are we going to pay?
EDUCATIONAL TARGETS

Understanding the length and width of a rectangular.

Understanding that the opposites sides of the rectangular are equal and all the angles of the rectangular are right.

Understanding what perimeter is and how to figure it.

Distinguishing the concept perimeter and area.
2nd PROMBLEM
Inside the schoolyard there is a garden of a rectangle shape. The length of the garden is 8 meters and the width is 6 metres. We are going to plant 4 flowers in each side of a square shape.
How many flowers are we going to plant?
EDUCATIONAL TARGETS

Understanding the concept of perimeter and how to figure it.

Understanding that all sides of the square are equal.