They are best represented by simple objects lending themselves to classroom settings and ease of control with minimum risk of accident throughout the student-object interaction.
Interaction with authentic materials, aids in the teaching-learning instruction by bringing students into contact with language as it is used in real-life situations in order to meet actual communication needs.
The increasing integration of computers into the classroom and the phenomenal growth of the Internet has brought about the need to combine the new educational technologies with teaching practices and techniques.
Real specimens such as plants, machines or tools enrich learning and make it more concrete, authentic and interesting as the learner is made to handle and study these things directly.
The presentation of real objects in the classroom, as they are known to exist or used in life situations provides first-hand or direct experiences for learners.