Source #1: Eiruvin 13b | עירובין יג
Click here for a translation of this source from Sefaria: https://www.sefaria.org/Eruvin.13b?lang=bi
This gemara serves as our introduction to the concept of אלו ואלו דברי אלוקים חיים. Beit Shamai and Beit Hillel are both correct - but the halakha follows Beit Shamai. Students should be introduced to the concept of multiple truths and halakhic pluralism, while also noting that even though both sides of the dispute may be “true”, ultimately the normative halakha can only follow one of the opinions - in this case, Beit Hillel. This further introduces students to the difference between objective truth (something that can be proven to be correct) and halakhic truth (the solution that emerges from the halakhic process). Furthermore, students should note the heavy emphasis that halakha places on our ethical behavior towards others - the halakha follows Beit Hillel for no reason other than the fact that they were patient, humble and treated Beit Shammai with respect.
Here's what students will take away from this source:
אלו ואלו דברי אלוקים חיים
- This concept of halakhic pluralism and multiple truths - that there can be more than one right answer to a question in halakha - is one of the core principles of the curriculum.