An objective is a clear statement of the intended behavior you attempting to teach. It contains three parts:
Behavioral objectives are both observable and measurable.
In other words, the student will do what? under what condtions? with what degree of success?
The components defined
1. What the student will do is stated in behavioral (sometimes called learning) objectives. These should follow Bloom's taxonomy, in that they can be written at various levels of difficulty. Examples: name, list locate, explain, compare, build, construct, count,etc. All are observable. We cannot observe these: understand, appreciate.
2. The conditions of performance includes materials, assistance, or circumstances in which the learning will occur. Ex. Given a map of the US..., in an oral presentation..., with colored blocks..., with support..., given a list of words... .
3. The degree of success refers to the level of mastery we want the student to achieve. It may be that the pile of blocks needs to built 3 out of 4 times to show success. If you are teaching a child to count to 5, your goal would likely be a 100% accuracy rate. You must determine at what point learning has taken place. If this criterion is not met (as shown by your assessment), the lesson will need to be repeated.