erythema chroÂ´nicum miÂ´grans a ring-shaped erythema due to the bite of a tick of the genus Ixodes; it begins as an erythematous plaque several weeks after the bite and spreads peripherally with central clearing.
Making self-assessment a success. In order to self-assess effectively, students must have an understanding of the criteria that they gauge their performance against in order to be able to evaluate what makes a piece of work good or poor.aking self-assessment a success. In order to self-assess effectively, students must have an understanding of the criteria that they gauge their performance against in order to be able to evaluate what makes a piece of work good or poor.
1 It can sometimes be subjective. 2  Ensure students know what the objectives of the observation assessment are. 3  Provide students the time period, location, guidelines, requirements, assessment criteria and if there are items that are not to be included.