The effective use of classroom technology can drive student results. Using the wrong technology or using it ineffectively can be a hindrance to learning. Remember, technology is a tool in the hands of a skilled artist.
Plickers-Great tool for quick reviews, exit tickets or any other multiple choice assessment. You can download and print the QR code style response cards from their website or order them on Amazon.
SeeSaw-Students add and annotate work in a digital portfolio that is shared with the teacher and parents.
Wizer.me-Digital worksheet platform. I am not a fan of worksheets because they are often misused. This has potential because it is full of options for embedding content into the "worksheet" and using multiple modes of questioning. There is a free and paid version. The paid version would equal out to two specialty coffees (or a week of drinks from your morning drink stop) each month.
If given the option for new displays for your classroom, carefully evaluate your intended use of the device.