iPad Mini 6's are in kindergarten classrooms. These tools can be plugged into the charging station overnight and then has a battery life to last a full school day's use. The case protects it while in the hands of young students. You also have a class set of headsets. There are hardware tools that connect well with software tools. This website is a quick list of information to assist in getting started with iPads in primary classes.
Seesaw is an ePortfolio that supports parent communication and student ownership. This is a primary friendly website that has a great app for the iPad. A number of kindergarten teachers are looking at ways of using the iPad and Seesaw to capture student writing and math work.
Osmo offers apps and manipulatives that bring interaction beyond the touch screen for students.
Take a look at the different ways to get started using Osmo in the YouTube playlist, linked here, and below: