Lesson Summary This investigation gives learners the opportunity to review everything they have done and learned about in the Earth Materials unit.  Learners are then able to self-select a topic to investigate further. Teacher Background This investigation offers up an opportunity for a student-led inquiry investigation.  If teachers have been documenting student learning and questions on a class chart throughout the unit, students can refer to this chart to help direct their investigation.  The Assessment section of the FOSS manual provides options for performance assessments related to this investigation. Set-up/Management Tip This part could take up to 1 – 2 weeks, depending on student investigations.  The learners may need extra materials and resources, depending on the focus of their investigations. Literacy Support Books Available Through VAST Mediagraphies: (see Literacy Links) Science Stories Word Wall/Word Bank The following words are key vocabulary words that will be introduced in this lesson and reinforced throughout the unit: *It is expected that the key vocabulary from the unit will be used appropriately in student investigations and projects.