Final answer:
Priscilla is employing Categorization and Numerical sequencing skills by organizing her baseball cards first by team, then by the players' batting averages within each team.
Step-by-step explanation:
When Priscilla is organizing her baseball cards by team and then by batting average within the team, she is using the ability related to Categorization and Numerical sequencing. Priscilla is employing Categorization and Numerical sequencing skills by organizing her baseball cards first by team, then by the players' batting averages within each team.
Firstly, she categorizes the cards based on the team, which can be likened to sorting objects based on a certain characteristic. Subsequently, within each team category, she sequences the cards based on the numerical values of the batting averages. This step involves organizing the players in order of their batting averages, which is a numerical sequence.