As shown in Chicago Shuffle, which you learned in lesson 36, it is possible to add extra notes to the minor pentatonic scale. The most common addition is the flattened 5th degree. Once this note is added, it becomes what is known as the Blues Scale.
Here is a common moveable fingering of the Blues scale in the key of A.
Run through the fingering until you are comfortable with it and can play it from memory.
Once you have memorized the fingering, try these riffs which are derived from the Blues scale. As with the minor pentatonic scale, use the ideas presented here to create some of your own Blues scale riffs.