When you demo to your class from the SMART board, sometimes images are smaller than you would like them to be and students often can not see "clearly" the information you are specifically talking about. If you need to zoom in during a lesson remember:
CONTROL + (keep hitting the plus sign to zoom in)
CONTROL - (keep hitting the minus sign to zoom out)
If you're in a G Suite document add the ALT Key:
CONTROL ALT +
CONTROL ALT -
Try it out! See what you think...
Happy Teching, Camille techtipswithcamille.com