Potential Paths: Path 1: Utilize Pedagogical's Instructional Diagrams feature that allows teachers to generate visual aids like flow charts and mind maps to support children's understanding of intricate topics. They can be used to illustrate data visualization concepts effectively. However, this tool's beta state implies potential risks and limitations. Path 2: Leverage Prodigy Math for its engaging graphic interfaces that help enhance student learning. While primarily built to teach math, its interface could be adapted to create simple bar graphs or pie charts to introduce data visualization concepts. However, it does not explicitly support data visualization.

Final Narrative: The available EdTech tools do not explicitly cater to your specific requirement of a data visualization tool for teaching Year 5 students. However, Pedagogical offers a feature that might aid your goal.

The "Instructional Diagrams" feature allows you to incorporate visual aids like flow charts and mind maps into your lessons, which you might find useful in explaining complex data visualization concepts. Although not an out-and-out data visualization tool, Pedagogical can be leveraged to illustrate concepts which students can then apply to data visualization exercises.

Here are the steps you can undertake to utilize Pedagogical:

1. Sign up: Register for Pedagogical's free plan which provides access to basic features including "Instructional Diagrams".
2. Prepare your Material: Prepare your teaching content. Remember, enrichment comes from the way you use the tool, so consider incorporating examples into your lessons that connect real-world phenomena with the data visualization concepts you want to teach.
3. Utilize Instructional Diagrams: Use the feature to create visual aids. Focus on simple representations to keep it comprehensible for Year 5 students.
4. Assess Learning: Deploy the "Assessable Content" feature to create quizzes based on the data visualization lessons to assess your students' grasp of the content.

Remember, Pedagogical is still in beta, indicating it may have bugs or missing features, so patience and adaptability will be key when incorporating it into your teaching plan. If Pedagogical doesn't meet your needs, consider revising your search query to find a more suitable product. Always feel free to ask for additional help if required!