ACT Math
Lesson Plan
Common and natural logarithms
Goals / Objectives
Interpret $\log x$ written without a base as $\log_{10} x$, and $\ln x$ as $\log_e x$
Evaluate common and natural logarithms on a calculator, and check each result by converting to exponential form
Describe $e \approx 2.718$ as a fixed irrational constant between 2 and 3 — not a variable, and not the E of scientific notation
Evaluate $\log 1000$, $\log 0.01$, $\ln e$, and $\ln e^3$ without a calculator, using the definition alone
Order $\log_2 x$, $\ln x$, and $\log x$ for the same argument, and explain why a larger base gives a smaller logarithm
Bracket a common logarithm between consecutive integers
Standards
F 707. Exhibit knowledge of logarithms
Academic Vocabulary
Not in our source material
Materials
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Remediation
Enrichment
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Accommodations
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Anticipatory Set / Bell Work
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Modeling
Check for Understanding
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Guided Practice
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Independent Practice
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Homework
Pacing
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