I almost deleted this resource recently. I'm still proud of some of its individual lessons and discrete ideas, but I first posted this when I was a fourth-year teacher and still pretty obsessed with classroom management and my own authority. My teaching has changed a lot since then, mostly for the better. You can find the stuff I'm most proud at threeacts.mrmeyer.com. I'm leaving this up but please be a critical consumer. Some of the ideas on this shelf are long past their buy-by date.

Dan Meyer taught high school math for six years, most of those in Santa Cruz, CA. He is the founder and Chief Blogging Officer of dy/dan, a wholly owned subsidiary of **dy/industries**.

**whiteboards** how we talk about numbers **number line** adding / subtracting positive and negative numbers **order of operations** **absolute value** **kinds of numbers** whole, rational, natural, etc.

keynote | powerpoint | pdf | handouts

**properties of numbers** commutative, distributive, etc. **fractions** a graphical approach to adding fractions with unlike denominators **basketball**

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**solving equations** number magic tricks, two-step equations **estimating age** absolute value activity

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**solving equations** combining like terms, real-world applications, coin math activity

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**solving equations** multiple step, variables on both sides **bingo** **applications** stacking cups, guinness world record math

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**proportions** gatorade **dimensional analysis** unit conversion, guinness world record math, **proportions applications** bone collector, fish tagging / counting **inequalities**

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**cartesian cartoon** connect the dots **linear patterns** graph, table, relationship **how i met your mother** hot / crazy

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**linear patterns applications** hit em, jet plane **basketball review**

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**linear patterns** slope-intercept, solving for y **basketball review**

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**linear patterns** point-slope, intercepts, standard form lines, deriving an equation from two points, parallel lines

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**linear patterns** intersections, systems **treasure hunt review** **race car review**

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**linear patterns** systems, standard form systems **race car review** **snowflake math**

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**linear inequalities** **relationships** **functions** graphs, sets, tables **linear patterns** perpendicular & parallel lines

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**exponents** millionaire & the little girl, multiplying / dividing like bases **scientific notation** **powers of ten video**

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**exponents** adding exponentials, distributing exponentials **graphing stories** indexed **race car review**

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**race car review** **polynomials** multiplying binomials, factoring trinomials with a = 1, algebra tiles

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**factoring** trinomials with a > 1, number game, by grouping

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**parabolas** will it hit the can exercise **square roots** **solving** roots of trinomials

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**rational expressions** adding, subtracting unlike denominators **feltron**

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**basketball review** **rational expressions** solving **square roots** operations **treasure hunt**

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**square roots** operations **sets** union, intersection, complement, venn

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**feltron** **correcting errors review** exponentials, rational expressions

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This supplement comprises thousands of slides and 2.64 GB — a lot of a/v content, in other words, some of which I did not author and do not have explicit permission to republish. Sorry about that. Every respect has been paid to Fair Use. Every effort has been made at attribution.

Textbook assignments and certain diagrams, for example, reference **Prentice Hall's Algebra 1 (California Edition)**. The opener miscellany, for another example, is lifted from both **Snapple®** caps and **Vital Statistics**, a reference text which is just as good as Snapple® but in a different way. If you are a copyright holder (or know one) and I missed your attribution, please let me know via **dan at mrmeyer dot com** and we will make that right.

The rest is yours to use under a Creative Commons attribution license. This supplement is provided as is. Your suggestions are welcome and appreciated but, due to time constraints, this is not a wiki. [Update: here is a wiki.]