Identifying similarities and differences is one of nine research-based strategies for increasing student achievement defined by Robert J. Marzano, DeJ.. - The behavioral-inheritance relations of [7,8] can be used to compare the life cycles of objects defined in terms of Petri nets. They yield partial .Identifying important commonalities and differences. by Nigel Hollis | 2 comments. When I think of Africa, I think of a place that 's warm and .See Identifying Similarities and Differences handout. - Use activities andignments that require students to cl.ify content and defend their conclusions..