Answer:

1. The three kinds of gadgets were used by students and teachers as a means of facilitating communication, information dissemination, means of obtaining and seeking references, making instructional administration and instructional media, and other supporting activities such as counting function, application development.

2. Electronic gadgets are prominent among these inventions. They play a vital role in our lives. The electronic gadgets which we use daily consist of lights, televisions, computers, fans, A/Cs, refrigerators, telephones, cell phones, etc. Life would have been very difficult without these inventions.