This product makes a good guided reading center. It is base word activity that gives your student practice in adding different endings to a base word. They have to pay attention to whether you just add the ending or have to double the last consonant of the base word, etc. If the base word + the ending does not make a new word, they have to put an X in the box. This activity is a nice companion to my Base Word and Endings Smartboard lesson. NOTE: The download is two separate pages that you can print off separately or copy back to back.