### Teacher Edition Answer Keys and Resource Links

Here you will find answer keys and resources referenced in Oak Meadow’s high school teacher editions. The external resources have been reviewed and vetted by our Oak Meadow teachers.

We strive to make sure that all of our links are intact, and from time to time, need to replace the links printed in the coursebooks. If you find anything that seems to be missing or out of place, please let us know.

### Algebra 1 Teacher Edition

**Lesson 1, part 2 Activity C:** *Calculating Percentages*

Math: Calculating Percentages (Answer Key)

**Lesson 2, part 2 Activity A:** *Loan Repayments Using Simple Interest*

Math: Loan Repayments Using Simple Interest (Answer Key)

**Lesson 2, part 2 Activity B:** *Making Sense of Percents*

Math: Making Sense of Percents (Answer Key)

**Lesson 2, part 2 Activity C:** *Yield to Maturity*

Math: Yield to Maturity (Answer Key)

**Lesson 3, part 2 Activity E:** *Citizen Math—Linear Equations in Society*

**Lesson 4, part 2 Activity D**: *Graphing a Budget Equation*

Math: Graphing a Budget Equation (Answer Key)

**Lesson 5, part 2 Activity C:** *Central Tendency of College Costs*

Math: Central Tendency of College Costs (Answer Key)

**Lesson 5, part 2 Activity D:** *Citizen Math—Solving Linear Systems in Society*

**Lesson 6, part 2 Activity A:** *Citizen Math—Exponential Functions in Society*

Billions & Billions—Teacher Guide

**Lesson 6, part 2 Activity C:** *Depreciation of Car Value*

Math: Depreciation of Car Value (Answer Key)

**Lesson 7, part 2 Activity C:** *Citizen Math—Quadratics in Society*

**Lesson 10, part 2 Activity D:** *Citizen Math—Quadratics in Medicine*

### Algebra 2 Teacher Edition

**Lesson 1 Activity B:** *The Cost of Minimum Payments*

Answer Key Math: The Cost of Minimum Payments

**Lesson 2, part 1 Activity B:** *Compound Interest Pitfalls*

Answer Key Math: Compound Interest Pitfalls

**Lesson 3, part 1 Activity B:** *Discounts and Composite Functions*

Answer Key Math: Discounts and Composite Functions

**Lesson 4, part 1 Activity B:** *Citizen Math—Systems of Linear Equations in Society*

**Lesson 6, part 2 Activity A:** *Citizen Math—Polynomials in Climate Change*

**Lesson 7, part 2 Activity A:** *Citizen Math—Rational Functions in Packaging*

**Lesson 8, part 2 Activity B:** *Standard Deviation of Stocks and Bonds*

Answer Key Math: Standard Deviation of Stocks and Bonds

**Lesson 8, part 2 Activity A:** *Citizen Math—Quadratics in Sports*

Teacher Guide: Out of Left Field

**Lesson 10, part 2 Activity A:** *Exponential Decay in Purchasing Power*

Answer Key Math: Exponential Decay in Purchasing Power

**Lesson 10, part 2 Activity B:** *Two Ways to Double Your Savings*

Answer Key Math: Two Ways to Double Your Savings

**Lesson 10, part 2 Activity C:** *Citizen Math—Exponential Decay and Your Brain*

**Lesson 10, part 2 Activity D:** *Citizen Math—Exponential Decay and the Opioid Epidemic*

**Lesson 10, part 2 Activity E:** *Citizen Math—Exponential Growth and Pandemics*

**Lesson 12, part 2 Activity C:** *Explore Patterns in Pascal’s Triangle*

**Lesson 13, part 1 Activity B:** *Counting Principles in Financial Decisions*

Answer Key Math: Counting Outcomes

**Lesson 13, part 2 Activity A**: *Citizen Math—Probability in Fast Food*

**Lesson 13, part 2 Activity B:** *Citizen Math—Probability in Gambling*

### Geometry Teacher Edition

**Lesson 2, part 2, Activity A:** *UNO Proofs *

Proofs with Uno Assignment (Answer Key)

**Lesson 3, part 2 Activity D:*** Real-World Application of Parallel and Perpendicular Lines*

Algebra 2 Ch 3 Parallel Lines Map

**Lesson 5, part 2 Activity A:** *Real-World Application of Points of Concurrency and Food Deserts*

Points of Concurrency Food Deserts

**Lesson 6, part 2 Activity C:** *Explore with Technology a Mystery Quadrilateral*

**Lesson 7, part 1 Activity B:** *Citizen Math—Ratio and Proportion in Driving Safety*

**Lesson 8, part 2 Activity B:** *Citizen Math—Constructions and Reflections in Driving Safety*

**Lesson 8, part 2 Activity D:** *Investigate Frieze Patterns*

Answer Key: Frieze Patterns Pearson

**Lesson 9, part 2 Activity A:** *Citizen Math—Roots, Radicals, and the Pythagorean Theorem in Society*

**Lesson 11, part 2 Activity A:** *Citizen Math—Surface Area, Volume, and Disposable Water Bottles*

**Lesson 11, part 2 Activity B:** *Citizen Math—Volume and Deforestation*

**Lesson 11, part 2 Activity D:** *Conduct an Experiment—Volume of Prisms and Cylinders*

Experiment 1 Answer Key: Popcorn Prisms Anyone?

Experiment 2 Answer Key: Popcorn Cylinders Anyone?

**Lesson 12, part 2 Activity E:*** Non-Euclidean Geometry—Circles in Taxicab Geometry*

### World History: Communities and Connections Teacher Edition

**Lesson 3:** *States and Empires in Ancient South and East Asia*

Beyond Gender: Indigenous Perspectives, Muxe

**Lesson 13:** *Contact, Colonization, and Catastrophe in the Americas (1450-1600 CE)*

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