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Triangles

tipo de documento Mathematics - Teaching sequence

Equipo Didactalia

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Triangles

Worksheet overview

Description:

This first look at triangles during the first two years of secondary education is mainly focused on the following: constructing triangles using a ruler and compass, characteristics of equal triangles, angles and area. Before studying this unit students should be familiar with how to measure angles and carry out operations with them. Although the study of special lines in a triangle usually takes place during the third and fourth years of secondary education a general introduction to this area in the second year is useful, and the Nippe Descartes programme is an excellent way of doing this.

Teaching orientation:

KNOWLEDGE TYPE: procedural

LEARNING OBJECTIVESTo learn different ways of constructing triangles using a ruler and compass. To introduce the concept of using geometric representation to work out the sum of the angles in a triangle and its area. To work out the size of the angles and area of any triangle. To be familiar with and construct various lines in a triangle such as the perpendicular bisector, angle bisector and median as well as knowing how to find the point where these lines intersect.

PRIOR KNOWLEDGEThe knowledge required is explained in this course

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 educational use. The actions, products and utilities derived from its use are therefore not allowed to generate any profit. Moreover, the reference to the source is required.

End user:

learner

Context:

schoolmate

General

Language:

english

KeyWords: area triangle angle barycentre circumcircle orthocentre

Scope: Universal

Structure:

linear

Agregation level:

Teaching Sequence

Collection: Descartes

Node:

INTEF

agrega.educacion.es

Repository URL: /repositorio/21072010/be/es_2010072163_9170945

IMS Manifest Download file

Technique

Format:

image/gif

text/html

Requirement type:

operating system

Requirement name:

multi-os

Requirement type:

browser

Requirement name:

any

Installation considerations:

Installation is not required

Other platform requirements:

Locally install and enable the Java interpreter and the Descartes applet plug-in.

Educational use

Educational learning resource type:

real or virtual learning environment

Interaction type:

mixed

Interaction level:

medium

Semantic density:

low

Age: 12 years

Difficulty:

easy

Learning time: 3 teaching sessions

Educational language:

english

Cognitive process:

observe

connect

represent

compare

understand

prove

Rights

License cost:

Access type:

universal

Access description:

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