What does "That's a good idea." mean in English for Spanish?

In English for Spanish, "That's a good idea." means:

Esa es una buena idea.

Listen to "That's a good idea.": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 2, Scene 6
• English for Spanish 3, Level 2, Scene 5