Students use the apps in an integrated fashion to successfully complete their quests. Throughout their quests, they consult
characters, such as the resident geographer, answer questions to open treasure chests scattered throughout the island to
obtain sand dollars (CRYSTAL ISLAND’s currency), use maps and coordinate systems to navigate the island (Fig. 7a), taking photos
along the way (Fig. 7b). Students can use the sand dollars they earn to purchase items and buy a ticket to ride to the top of
the lookout tower (Fig. 7c). Students also construct virtual models of their village using a modeling app on their virtual tablet