21.   They can pick either easy or hard difficulty levels when selecting a game.

22.   This works well with the difficulty level and may be better suited for upper elementary and early middle school students.

23.   Up pops an overview of the trail that includes description, length, difficulty level, best months to hike and special features such as streams or ruins.

24.   You may also need to scale back the difficulty level on his next assignment and consider providing him with more feedback and guidance along the way.

25.   It gets tougher as you increase the difficulty level.

26.   Like other puzzles and games, it can be played at four different difficulty levels.

27.   Multiple difficulty levels.

28.   You can choose to play Quake II based on different difficulty levels ranging from easy to hard.