Learning goals: Teacher Facing Generalize a process for dividing powers of 10, and justify (orally and in writing) that $\frac{10^n}{10^m} = 10^{n−m}$. Use exponent rules to multiply and divide with $10^0$, and justify (orally) that $10^0$ is 1. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 8.7 Exponents and Scientific Notation, Grade 8.