Designing a technology based learning environment for place value using artifact-centric activity theory

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  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Notice: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
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