The Making Every Class Catholic Newsletter

The Making Every Class Catholic Newsletter

Proving Conjectures: Seeking Truth in Mathematics - A High School Math Lesson

Our second lesson from Teacher Time Machine

Brett Salkeld's avatar
Brett Salkeld
Jan 29, 2026
∙ Paid

For teachers who want help creating high-quality lessons that truly reflect a Catholic worldview, Teacher Time Machine is a powerful support. An AI lesson planning platform that supports teachers in designing curriculum-aligned lessons that are intentionally faith-permeated, it allows Catholic educators to integrate Church teachings, Scripture, and Gospel values directly into their planning using a backward design approach, ensuring lessons are academically sound, mission-driven, and responsive to the needs of their students. Teacher Time Machine helps educators design faith-permeated, curriculum-aligned lessons while keeping teacher expertise and classroom context at the center of the process. Try it free at

https://new.teachertimemachine.com/

I’m delighted to be partnering with Teacher Time Machine to offer monthly, faith-integrated lesson plans for paying subscribers.

This Month’s Lesson: “Proving Conjectures: Seeking Truth in Mathematics”

Grade 11 Math
Theme: Exploring Inductive and Deductive Reasoning

Truth isn’t something we vote on—it’s something we seek, test, and ultimately encounter through proofs.
This lesson invites students into the heart of mathematics as a search for truth, showing how careful reasoning, honest doubt, and perseverance lead us beyond patterns to certainty—just as faith and reason together guide us toward what is truly real.

What students will explore:

  • The difference between spotting patterns and proving what is always true

  • How inductive and deductive reasoning work together in mathematics

  • Why counterexamples matter—and why thoughtful doubt is not a weakness

  • How the pursuit of mathematical truth mirrors our spiritual call to seek truth with humility and confidence

In the full lesson, you’ll find:

  • A collaborative “Conjecture Challenge” game that guides students from patterns to proof

  • Clear, student-friendly practice with inductive and deductive reasoning

  • Faith-informed connections between mathematical truth, perseverance, and the life of faith

  • Reflection and inquiry prompts that help students articulate why truth matters beyond the classroom

👉 Upgrade to a paid subscription to access the complete lesson plan (with all 10 pages of images and the accompanying PDF) and a new Teacher Time Machine lesson each month.

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