Two Case Studies with full solutions looking at Calcium and thyroid regulation. Perfect for inquiry activities with students having access to the internet. I recently used them with my 12U's after teaching the regulatory pathways and used this as a consolidation. Students worked in groups of 3 or 4 with a chrome book and had a period for the first Case study, then the second case study was assigned for homework. I graded both as formative assessments and had a summative case study in the same format as part of their unit test.