Skogsbackeskolan
Karlstad
Age:
10-11 years
Goals:
To paint a given geometrical figure in the snow
To measure it and calculate the perimeter
To estimate the perimeter
Materials:
Water-colour, brush, a glass of water, one metre piece of string.
All these things are given to each group.
I divide the class in five groups and give each group a geometrical figure to draw and measure.
Then they go outside and find themselves a place in the snow where they can make the figure.
The figures they shall draw are a circle, a rectangle, a triangle and a polygon.
When the figures are painted they are supposed to measure them with the help of the string and calculate the perimeter.
They are not supposed to tell the other groups the result!
When all the groups are ready we walk from one group to another and the other pupils who haven´t done this figure have to estimate the perimeter.
Evaluation:
They had great fun painting in the snow and they all made nice figures.
They also managed to measure the figures but they had discussions how
they should measure the figures when the length and the breadth wasn´t
as long or as short as the piece of string they had got from me (1 meter).
But all of them realised how to divide, the one metre string in 50 cm,
25 cm and 12 cm.
The estimation of the perimeter from them all was quite good as well.
