If the first dose of a tetanus toxoid-containing vaccine is administered before the first birthday, 4 doses are necessary before beginning the 10-year cycle of booster doses. If the first dose is administered after the first birthday, 3 doses are necessary.
Teacher-Authored Instructional Unit Samples. The content specialists in the Standards and Instructional Support office have been working with educators across the state to create instructional units based on the published curriculum overview samples.
Credit for college classes is measured in units.. A unit relates to the amount of time spent in class. For example, a three unit class will meet for three hours per week. Classes with labs will meet for additional hours and very often the class is worth additional units.