Films pour enfants

Imagine a culture circle

Mathematics6-11 years old

Educational activity around the short film Piok

Expected end of activities

Recognize, name, describe and reproduce geometric figures and shapes.

Piok

Piok © ECV

TitlePiok

ThemeAnimals, Extra-terrestrial

Genre & keywordsComical, farm, hen

Age (for film)6-11 years old

Duration3 min 34 s

DirectorTheo Dusapin & Clément Dartigues

MusicPascal Dusapin

Production2012 (France, 2012)

Educational activities

Recognize and name and represent geometric shapes. Use a compass, draw circles, compare and measure distances.

Following the viewing, the students will wonder about the last image of the short film. What is this strange drawing in the wheat field? What does it represent? Who could have drawn it? And in reality, have they ever seen this type of drawing in a cereal field?

What do we call this? This is called “culture circle” or “crop circle”. A crop circle is a geometric pattern made in a cereal field. Visible from the sky, these creations can range from a simple circle of a few meters in diameter to compositions of several hectares. These geometric patterns are made by laying the ears of cereals on the ground but the authors do not always claim their creations and some fans of paranormal phenomena attribute their origin to supernatural causes, extraterrestrials for example. Following a debate on the origin of these drawings, the students will in turn imagine their own patterns.

To your compasses!

First, study different examples of culture circles. There is no shortage of photographs on the Internet. Students will notice that most crop circles are constructed from simple geometric shapes and can try to reproduce them using a ruler and compass.

For 6-9 year olds, count and name geometric shapes, square, triangle, circle... geometric and spatial relationships, inside, outside, left, right, bigger than...

For 9-11 year olds, point, line, half-line, segment, edge, vertex, side, angle, radius, diameter, midpoint, bisector, height, parallel lines, perpendicular lines... The compass will allow you to transfer lengths, draw circles, but also bisectors, right angles...

Secondly, the students will imagine their own culture circle. But be careful, nothing is possible without geometry! Construct the bisector of a segment using a ruler and a compass without a square or graduated ruler could be a starting point for imagining a more complex assembly of shapes. There is no need to measure a segment to find the middle!

Extensions

  • For schools located near cereal fields or for a green class, why not organize, with the owner of the field, a life-size culture circle!
Culture circle in Switzerland. Photo: Kecko. CC BY 2.0.
Culture circle in Switzerland. Photo: Kecko. CC BY 2.0.
Culture circle in Switzerland. Photo: Kecko. CC BY 2.0.