Arts and Crafts: How to Make a Frog that Jumps

The video starts with a playful phrase, 'Jump little frog,' and concludes with a wrap-up, thanking viewers for watching. It humorously questions if the show is over and encourages viewers to subscribe for more content.

How does the speaker's tone change from the beginning to the end of the text?

What might be the purpose of encouraging viewers to subscribe to the channel?