GED PREPARATION-U.S. HISTORY-UNIT ONE-AGE OF EXPLORATION-PRACTICE EXERCISES THE STUDY BUDDY, INC. SAINT PETERSBURG, FLORIDA Tools See a list of terms used in these activities. Matching Flashcards (Java / non-Java) Activities created by: The Learning and Tutoring Center, Inc. This activity was created by a Quia Web subscriber. To learn how to make your own, just like this, click here.