Prompt students who have not yet begun marking their maps. Students continue working. Ask students if any group has located the source of the outbreak. If the groups are unable to locate the source of the outbreak using the victim cards, give them a set of clue cards. Once all groups are finished marking their maps and have found the source of the outbreak, discuss their findings.
Students discuss findings and how they investigated the problem.
Assess student groups on their ability to use the cards and the map to investigate the source of the outbreak. Use the scoring guide found at the end of the lesson. Students are assessed. Students listen and respond. Give each student a short quiz over the vocabulary learned in this lesson.