YOP Poll
The YOP Poll allows you to create polls with single or multiple answers and provides some nice templates for the polls. Polls can be added to post, pages and their is a YOP widget as well.
To use YOP Poll go to your dashboard sidebar and select [Plugins]. Then [Activate] the YOP Poll.
Once activated you will find a YOP Poll menu item in the dashboard sidebar.
See https://wordpress.org/plugins/yop-poll/faq/ for instructions on creating a poll.
For an example of a YOP poll see Biology Class Visits Aquarium article of The Ortega Reporter.
Plugin creates a shortcode that can be pasted in a post or page. The Plugin also provides a widget for displaying poll in a sidebar.
Polls & Quizzes by Opinion Stage
This PlugIn requires the teacher-sponsor to create an account with Opinion Stage, the developer of the Plugin. To use Polls & Quizzes go to your dashboard sidebar and select [Plugins]. Then [Activate] the Polls & Quizzes.
Once activated you will find a Polls & Quizzes menu item in the dashboard sidebar.
See http://blog.opinionstage.com/wordpress-poll-how-to-add-polls-to-wordpress-sites/?o=wp35e8 for instructions to connect the Plugin with the teacher-sponsor Opinion Stage account and for instructions on adding a poll to a post or page.
For an example of a Polls & Quizzes poll see online article (scroll to end).
Plugin creates a WordPress poll code that can be pasted into a post or a page. An Opinion Stage Sidebar Widget can be used to display the poll in a sidebar.