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Star-shaped polygons and algorithms

tipo de documento French-Foreign Language - Teaching sequence

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Star-shaped polygons and algorithms

Worksheet overview

Description:

In this unit we will learn how to construct and 'define' star-shaped polygons. The first part involves a description of how to construct them, using a ruler and compass, although we will be using the computer to draw them. The second part is somewhat more abstract as we discover which conditions we need to produce a star-shaped polygon and which properties it has. In both parts we use algorithms to give constructive explanations, i.e. we define star-shaped polygons as shapes obtained by following an exact set of instructions. This way of defining geometric shapes is certainly not one of the most familiar methods used but it does lend itself to describing star-shaped polygons. It also allows us to discuss other related areas of interest such as algorithms.

Teaching orientation:

PRIOR KNOWLEDGE You need basic knowledge of geometry of previous course

KNOWLEDGE TYPE: procedural

LEARNING OBJECTIVES * To understand what algorithms are along with other concepts related to them. * To learn how to create simple algorithms. * To use algorithms to construct star-shaped polygons.

License:

creative commons: attribution - non commercial - share alike

License description:

The use of the following contents is universal, free of charge and open, provided that it is for non-commercial educative use. The actions, products and utilities derived from its use may therefore not generate any profit. Moreover, a reference to the source is required.

End user:

learner

Context:

classroom

General

Language:

english

KeyWords: algorithms polygons star-shaped

Scope: universal

Structure:

linear

Agregation level:

Teaching Sequence

Collection: Descartes

Node:

INTEF

agrega.educacion.es

Repository URL: /repositorio/04032010/08/es_2010030463_9220811

IMS Manifest Download file

Technique

Format:

image/gif

text/html

Requirement type:

browser

Requirement name:

any

Requirement type:

operating system

Requirement name:

multi-os

Installation considerations:

Installation is not required

Other platform requirements:

nstall and enable the Java interpreter and Plug-in of the Applet Descartes on local

Educational use

Educational learning resource type:

real or virtual learning environment

Interaction type:

mixed

Interaction level:

high

Semantic density:

medium

Age: 14

Difficulty:

medium

Learning time: 1H 40M / 2 teaching units

Educational language:

english

Cognitive process:

analyse

practise

Rights

License cost:

Access type:

universal

Access description:

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