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 Topics 

Math 20 Topics

Shapeshifting

Changing a Number

Introduction
Top of Page
Rounding
Rounding
Fraction Format
Fraction Format
Percent Format
Percent Format
Measurement
Measurement

Mad Science

Simplifying an Expression

Introduction
Top of Page
Fractions
Fractions
Percentages
Percentages
Measurement
Measurement

Justice

Solving an Equation

Introduction
Top of Page
Fractions
Fractions
Percentages
Percentages
Measurement
Measurement

Math 25 Topics

Health Decisions

Straightforward Formulas

Introduction
Top of Page
Patterns
Patterns
Calories
Calories
Metabolism
Metabolism
Food Preparation
Food Preparation

Personal Finance Decisions

Context Sensitive Formulas

Introduction
Top of Page
Typicality
Typicality
Bell Curves
Bell Curves
Mortgages
Mortgages
Saving
Saving

Business Decisions

Context Sensitive Procedures

Introduction
Top of Page
Margin and Markup
Margin/Markup
Pricing
Pricing
Charge Options
Charge Options
Likelihood
Likelihood

Becoming Good at Math

Our class teaches practical math and cures the mindset "I am bad at math". It usually cures the mindset "I am afraid of math".

Study Skills

Besides the topics above, you will learn math study skills. Math classes have their own best ways to take notes, do homework, cooperate in groups, and prepare for tests.

If you have never been taught these study skills then of course you felt overwhelmed by previous math classes. You were actually trying to learn two classes at once: the math topics and these study skills. Then there was the extra problem that the second class is barely acknowledged.

We emphasize these study skills. Once you learn them, your classmates in future math classes will look at you and say, "You are such a good math student!" What they mean is, "I am still doing a double curriculum but you're not. You are passing the class while doing half the work."

This is one-third of becoming "good at math".

Math Tools

Math 20 is about foundational tools: ratios, percents, measurement conversion, percent change, sales tax, proportions, scale factors, unit analysis, basic geometry, and calculator use.

Math 20 only uses those foundational tools in the most basic way. But there is much more to learn about context.

various kinds of pliers As an analogy, a young child knows what a "pliers" is. They understand how to use one. But in real life there are many kinds of pliers, each appropriate in different situations, and each used slightly differently.

Math 25 assumes your understanding of those tools is vague and mostly forgotten. We review and build a solid understanding about how and when to use those tools in real life.

This is another one-third of becoming "good at math".

Big Issues

You will also be introduced to the delightful world of math issues without right answers.

Yes, we do small problems with right answers too. Those are the foundation of any discussion of big issues. We learn a few facts and formulas, and discuss their appropriate uses, practical help for decision making, and limitations. You will learn them and grow in math confidence.

But much more interesting than these small problems (that do have right answers) are the big issues.

Big issues involve depth and guidance. They are not small, shallow issues with certainty. They ask what does this kind of math mean for you? How can math help you make better health decisions, personal finance decisions, and business decisions? Those issues have no right answers.

Those big issues will introduce you to seeing life with a math worldview. The big issue answers you develop during class will continue to mature as you mature. This is how math helps quality of life.

This is the final one-third of becoming "good at math".

Allow the class to challenge you. Achieve your potential. Be pleasantly surprised by the height of your accomplishments.