Potential Paths: Path 1: Using the Prodigy platform which directly caters to math concepts including probability, and is explicitly targeted at students from grades 1 to 8. We can utilize its adaptive learning and real-time feedback features that help students to better understand probability concepts. Path 2: Using Questionwell AI to generate questions on the textbook chapter related to probability, allowing the teacher to use this generated question database as another reinforcement tool.

Final Narrative: Although neither the Pedagogical tool nor Questionwell AI specifically focus on the concepts of probability for 9th graders, they can both be utilized in conjunction with other learning materials to provide support and reinforcement of these concepts. However, it seems the best fit for your query is the tool Prodigy which, albeit aimed for grades 1 to 8, covers the full range of math concepts, likely including probability.

Prodigy provides a platform that makes the learning process engaging by incorporating gaming elements, allowing students to practice probability and other math concepts while navigating through an intriguing virtual world. On top of the engaging gameplay, it is designed to adjust its level of difficulty based on a student's performance, ensuring a manageable but challenging learning experience.

As a teacher, Prodigy provides features for real-time feedback and comprehensive reporting. This means you will be able to actively monitor your student's progress and provide guidance as necessary.

Additionally, the platform aligns with various educational standards including Common Core, which typically covers probability in its curriculum for 7th graders. This means it will supplement your existing curriculum well.

To get started with Prodigy:

1. Try out its free version, which has limited features but will allow you to understand its overall functionality.
2. If you find the tool helpful and wish to unlock more features, consider purchasing a monthly subscription ranging from $6.25 to $11.25.

Despite the platform's target audience stopping at the 8th grade, it can be a useful tool for reinforcing concepts in the initial part of 9th-grade probability learning. Be aware that as learning progresses, you may need to consider an additional platform or materials for higher complexity aspects.