• warning: Parameter 2 to ed_classified_link_alter() expected to be a reference, value given in /home/soloneconomist/www/www/includes/common.inc on line 2968.
  • warning: Parameter 2 to ed_classified_link_alter() expected to be a reference, value given in /home/soloneconomist/www/www/includes/common.inc on line 2968.

involves both conceptual knowledge such as trigonometry and algebra

a projectile launcher that can hit a target and a mechanized sorter that can sort different marbles based on their different properties.