What would you do for a 4th grade student who is becoming bo…

What would you do for a 4th grade student who is becoming bored with the vocabulary words the other students are using in the class (NOTE: you noticed that the grades were slipping for this student during weekly vocabulary tests)?  What specific activity could help this student show growth?  How often would you implement this activity?  What would be the measure that you would use to show progress being made?