ESO 3. Spreadsheet Calc

LibreOffice / OpenOffice Calc .
Read this [1] theory,  and  make this exercise [2] or this [3] (more complete) . Save it as invoice.ods and send to tecnologias.secundaria@gmail.com

You can download LibreOffice from this [4] URL. If you can't install applications in your computer  you can also download a portable version from the same URL.

[1] GCF Learn: http://www.gcflearnfree.org/calc
[2] https://dl.dropbox.com/u/6444346/Technology/ESO3/Calc/invoice.pdf
[3] https://www.box.com/s/yl6hayv9quvsk0v8o418
[4] http://www.libreoffice.org/download
[5] (Prácticas de LibreOffice Calc) http://iesvillalbahervastecnologia.files.wordpress.com/2010/10/practicas-de-calc-primera-tanda.pdf