The role of Instructional Material

product. Objectives become the best basis in developing the product in order to give the suitable guidance of the designed developing. 3. Develop preliminary form of product This step shows how the preliminary product is developed by conducting the plans discussed previously. It includes preparation of instructional materials, handbooks needed and evaluation devices. 4. Preliminary field testing After the preliminary product is finished, it is then tested to obtain qualified evaluation of the product. The method used can be by interview, observation or distributing questionnaires. 5. Main product revision The data of the method used to test the product are then collected and analyzed. It results the feedback of the participants. The feedback is the used to revise the product. 6. Main field testing The revised product is tested again to determine the success of the product in meeting its objectives. Besides, the test will result other information that can be used to improve the next revision. 7. Operational product revision When the findings of main field testing find any weaknesses in the product, the first revision of he product is considered failed in meeting its objectives. The next step is to revise the revised product again. 8. Operational field testing Testing and revision will continue until the products meets its objectives. Therefore, the second revision of the product is then tested to determine whether the product is already complete. Similar to the first testing, data is also analyzed. Usually, new information that might be get from this step is not as much as te previous. 9. Final product revision When the data has been analyzed and the product is considered complete, the final product is the carried out. The final result of the revision can be used in the teaching learning process. 10. Dissemination and implementation If the final version of the product will be used to teach, dissemination and implementation are needed. However, there is always possibility that not all people can use the product. Therefore, demonstration is done, so the product can be used.

B. Theoretical Framework

Some steps are required to make a set of instructional materials to teach speaking to the tourist guides in Agrowisata Turi. Soekamto 1993, 11 suggest three criteria as the requirements for choosing the suitable model. They are: 1. A design model should be simple and should not contain any specific terms, so that the model will be easy to understand. 2. A model should contain all steps that need to be implemented in process of instructional system in order to be well functioned.