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

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  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Warning: Array to string conversion in theme_biblio_tabular() (Zeile 244 von /var/www/cermat.org/sites/all/modules/biblio/includes/biblio_theme.inc).
  • Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in rename_admin_paths_url_outbound_alter() (Zeile 64 von /var/www/cermat.org/sites/all/modules/rename_admin_paths/rename_admin_paths.module).
  • Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in rename_admin_paths_url_outbound_alter() (Zeile 82 von /var/www/cermat.org/sites/all/modules/rename_admin_paths/rename_admin_paths.module).
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