This curriculum guide contains pacing, instruction, prior knowledge, and assessment guidance to accompany the OpenSciEd unit 7.5 Ecosystem Dynamics and Biodiversity. For schools who use Fisher and Frey's The Teacher Clarity Playbook, you'll find student-friendly learning intentions and success criteria for every lesson (indicated by a number and letter, ie: 4b), drawn from the OSE three dimensional performance expectations. These can be posted on slides or boards in classrooms to make learning visible for students and help design assessment criteria.