Slider doesn't work on touchscreen

We run a lot of storyline 3 material in our Biology classroom on touchscreen computers.  Normally, we have keyboards and mice attached to the computers.  This semester, we need to clean between every section and to make that easier, we took away the keyboards and mice.  Everything is fine except for the sliders and dials, which don't work when using only the touchscreens.  We also have to manually open the keyboard whenever the students need to answer a text question.  We are using Windows 10 machines and FireFox or Chrome browsers.  Do these features not work on Windows touchscreens?  Thanks! -Eva