Kahoot! is my new favorite tech tool. It is a free online question response system that allows you to create game based reviews or polls. It works with any 1:1 or web based BYOD device.
What I like is that I don't have to make any questions if I don't want to. There are literally thousands of Kahoots you can search in their data base, from science to ELA.
The kids LOVE playing it. Teachers would register at getkahoot.com but students would go to kahoot.it to play. You the teacher would push out the kahoot you want students to play and they would register with the provided pin. They would then register their name and the game would begin. FYI - You can also have a large number of players so if you needed to combine classes or wanted to do a faculty wide kahoot you could.
1. The questions and answers DO NOT show up on the students device (only the four color answer grid - see first picture above). This makes it hard for children in the back of the room to see the answer choices on the interactive white board. It is a small limitation for a great free tool.
2. The data base for searching doesn't allow you to search by grade level so you can get a lot of different level kahoots when you search for something like "The Cold War." You can indicate "school" but that covers all levels of "school." You can preview so you can eliminate kahoots that don't fit your needs and you can "favorite" kahoots so you can quickly find them again.
I use them as a warm up. For example - I recently taught a class on multiplying fractions so I found a short 10 question fraction review to do as a warm up.
If you are in a 1:1 or BYOD environment this is definitely something I would add to your list of "go to" resources.