Problem solving as an instructional method: The case of strategy-open problem “The treasure island problem”

Fehlermeldung

• 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).