Lesson S&L 4
Task: Identify different sounds.
Prerequisites: ADT 4—ADT 6
Concept: To perform this task, three skills are needed: to point to objects, to discriminate between two items, and to associate two things together (see the prerequisites). Using these skills, an effort is made to associate a sound to an object or picture and then to point to the correct response after having discriminated it from other choices. As a result, verbal responses on the part of the student are not critical in learning this skill, but verbal responding can be a very useful tool and should be encouraged.
Behavioral Objective: When presented with a specific sound in the presence of five items and asked, "Which one sounds like this?" the student will point to, or otherwise identify, the object or picture that has been taught to relate to that sound, to a 90% accuracy level for 20 trials.
Materials: An audiocassette player/recorder and at least five pictures or small objects common to the student's environment. These will become visual cues. The teacher should create a recording that will be associated to each object. Preferably the sound should be a realistic sample of a sound related to that object, for example, a picture of the student's school bus and the sound of its engine or a toothbrush and the sound of brushing teeth.
Task Analysis:
1. Using the student's ability to point to or otherwise identify an item (ADT 4), review the items selected from the materials section, referred to as visual cues, with the student.
2. Taking only one item at a time, present the item and play its corresponding sound. Do this for all the chosen items. In this step, provide verbal descriptions of the item and sound. Repeat this step until it is perceived that the student may be beginning to associate the sound with the item.
3. Present two items and only one sound (related to one of the items) and ask, "'Which one sounds like this?" Prompt pointing to the correct answers as needed.
4. Continue Step 3, gradually increasing the number of choices to five and reducing all prompting. Continue until the objective is met.