Gallery Walk's are a fun, interactive way for students to examine pictures and make inferences about what they see using their prior knowledge. This lesson focuses on the impact of the European exploration on the Americas land and people. Pictures are provided to complete a gallery walk. Included is a graphic organizer for the students to state what the notice (see), what they wonder, and what they infer. There is a differentiated worksheet included with certain parts of the graphic organizer completed, and there is an answer key for the inferences.