Teachers should help the children understand the importance of connecting to Internet and how that will be useful.
Teachers should Explain about Wi-Fi and Hotspot. Also point out alternatives like wired connection, etc.
Ask the students to think about how data from their computer goes to say Google.com server and comes back to them with the answers. From our computer to the Wifi router (LAN), from our router to Google’s router (through the Internet), from Google’s router to their server (their LAN) and reverse way back.