Plants, pebbles, and blocks are just some of the effective instructional materials readily found in the environment if they are utilized properly. Which of the following is INCORRECT about classroom use?

• A. Pass a single object around the class.
• B. Familiarize yourself with the object or model before its actual utilization.
• C. Use the objects as a springboard in encouraging students’ active participation
• D. make sure that the realia and model are large enough to be seen by the whole class.