This document provides an agenda for a 5th grade science collaboration day with sessions on using systems thinking to connect science standards, celebrating Darwin's 200th birthday, and exploring science with a planetary scientist. It also discusses standards on the formation of Earth materials and how water plays a role in weather. Sample probes and inquiry scenarios for 5th grade science kits on systems and environments are described and criteria for writing conclusions and planning investigations are listed. The document concludes by reminding attendees to respond to a ticket out and return in one hour for an afternoon math session.