Hand Raiser

Main Welcome Page - Mobile
Student Perspective
Available poll types to launch - Teacher Pespective
Student can cast their vote to the poll at the bottom
Poll Results - Everyone can see
Main Welcome Page - Desktop

Inspiration

During our first online classes, we noticed how difficult it is for teachers to keep track of raised hand and general class feedback.

What it does

Teachers can create a room to which students join. At any moment, a student can press a button to "raise their hand". Teachers can also launch a quick 10 second poll to which students will be prompted to answer; the results will be compiled and displayed anonymously.

How we built it

Using Node.js for the server, JavaScript and Materialize CSS for the client and Socket.io to link the two.

Challenges we ran into

Keeping track of several rooms (creating them and knowing when the ID can be reused)
What to have the server process and what is safe to offload to the client
Making sure a "student" is not impersonating the "teacher's" connection and performing room owner actions.

Accomplishments that we are proud of

The entire project!

What we learned

How to use JavaScript on the server side and how powerful sockets can be.

What's next for Hand Raiser

Improving the poll UI (example: showing a countdown with how much time remains to the poll, making it more obvious to a student that a poll started)
Join a room from a sharable link
Keep track of who raised their hand first
Provide an optional audio notification to the teacher when a new hand is raised