This is a song from StoryBots: Learn to Read Collection 2. It's sung by Gabe Sokoloff.
Lyrics[]
Reading words on a page is so much fun
But what do you see when a sentence is done?
You've read what the sentence says and then
There's a period at the end.
It's a little round dot that can't be beat
For telling you that a thought is complete
The dog plays ball. The bunnies hop.
The period means you stop
(Feels good, right?)
When you're reading a storybook narration
You're gonna see some punctuation
So pause where the dot goes in
And the next sentence can begin
The whale is big. The boat is red.
Stop for a second once it's been said
It's a solid rule, no passing trend
Put a period at the end
Yeah, a period at the end