Try this Google Earth "quiz" on Animal sounds from NPR's Science Friday to engage your students! I have mentioned before and on the Talking with Tech podcast that quiz-like activities can be a great way to build semantic knowledge and structure a conversation. In addition to prompting attentive listening, this one will let you play Animal Sounds, sometimes hilarious, and discuss:

-descriptive attributes from the photos

-animal groups and families

-geographic locations and descriptions of settings!

It is a great way to tie in with a classroom unit on the continents, habitats, or other geography or science content.