1. **State the problem:** We need to order the temperatures 0°F, 12°F, -15°F, and -8°F from coldest to warmest. 2. **Understand the concept:** On the temperature scale, smaller numbers (more negative) represent colder temperatures, and larger numbers represent warmer temperatures. 3. **List the temperatures:** 0, 12, -15, -8. 4. **Compare the values:** -15 is less than -8, which is less than 0, which is less than 12. 5. **Order from coldest to warmest:** $$-15 < -8 < 0 < 12$$ 6. **Final answer:** The temperatures in order from coldest to warmest are -15°F, -8°F, 0°F, 12°F.