I created these for my students to practice determining the meaning of words using context clues.
You can have your students use these in a variety of ways. They can use them in reading centers on their own. They can read the cards on their own and try to determine the meaning. They can then look up the meaning in the dictionary. Or you can give them the meaning and they can check.
I usually use this with my students in reading group with me. We take turns reading the cards and as a group we discuss and determine the meaning of the words.