Information about devices with touch-screen

Multi-touch issues on Chromebooks and Lenovo Yogas can be complex due to the touch interaction pieces and cross-browser compatibility. We recommend that users with multi-touch devices use the cursor while completing assessments. Using the touch functionality, or switching back and forth between cursor and touch, can cause errors in graphing, number-line plotting, or drag-and-drop answers. Below is a list of known issues with the Big Ideas Math Dynamic Assessment System and these types of devices. These issues are not with the Big Ideas Math website as a whole.

Summary	Description	Known Affected Devices	Affected Browsers
Image-tool on Windows touch	Image-tools (protractors/rulers) cannot be dragged on Windows touch devices, including hybrid touch.	Lenovo Yoga Windows tablet	Chrome IE11*
Cannot drag calculator	The calculator feature cannot be dragged on Windows touch devices in IE11.	Lenovo Yoga Windows tablet Asus hybrid touch laptop MS Surface	IE11*
Graphs	Number lines do not work with touch-screens. It is not possible to finish the polygon (connect the last dots) by using touch to plot the polygon. For example, you can draw a line using your mouse or touch, but with touch you cannot move it or change the size. When you touch a point to move it, it does not respond to the mouse either.	Dell Inspiron 13 7000 Series 2-in-1 laptop	Chrome (If you use just the touch-screen or mouse, it works well. The problem starts when you switch between mouse and touch. Once you start using the touch-screen, it does not let you use the mouse again.) IE11*
Drag-and-drop questions broken on Firefox for hybrid laptops	Drag-and-drop questions do not work using touch on hybrid devices.	Lenovo Yoga Windows tablet Asus hybrid laptop	IE11*

Note that IE is not a supported browser.