I highly recommended this digital timer, it’s a game changer and you might want it for back to school (it’s only $10, I’ve had mine for 6 years). I love it! We use it a lot for transitions and it’s like magic! So easy to set, all my students can do it! I wanted something affordable to place at the front of our classroom. I’ve used several timers online, but I want to be able to use my document camera too, so this was my solution. TIMER aff. link: https://amzn.to/46cbOYy | Head Over Heels For Tea