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tipo de documento Matemáticas - Secuencia didáctica
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In this unit, basic concepts of natural numbers are revised and the operations of addition and subtraction are practised. Numbers that appear in each window are generated at random. This allows you to use the window indefinitely and practise a lot of different exercises. Numbers consist of only one or two figures so the calculations can easily be done mentally. Magic squares are used in the exercises, however the main objective of this unit is to learn things about natural numbers.
PRIOR KNOWLEDGEThe contents of this course is taught in two courses previous and in two courses next.
KNOWLEDGE TYPE: conditional
LEARNING OBJECTIVESTo identify values which are natural numbers To be able to produce a graphical representation of several natural numbers on a line. To put in order the values of several natural numbers To add up natural numbers To make proper use of the addition properties. To subtract natural numbers To understand how subtraction is different from addition. The position of the numbers has to be preserved and the larger one has to be put first. To train in mental calculation of addition and subtraction
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.
Installation is not required
Install and enable the Java interpreter and Plug-in of the Applet Descartes on local
Fecha publicación: 29.3.2015