Lessons in Units

CCSS Units
Aws4 request&x amz signedheaders=host&x amz signature=653d914e6a02b8a11c30c574939869e711091260e3dc53a4219cb2f8ffe3bb33

Tip Jar

How should we tip in a restaurant? Students use mental math, percents, and proportional reasoning to compare different approaches to tipping.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=0a25eb414120daad6c7a681f3dce2fb29aebce7844f2c95ffe42e07ba2cc48b3

Domino Effect

How much does Domino's charge for pizza? Students use linear functions — slope, y-intercept, and equations — to explore how much the famous pizzas really cost.

Topic: Expressions and Equations (EE), Functions (F)
Aws4 request&x amz signedheaders=host&x amz signature=4c818fbb87dc47a654d401e2d2ca081ffd92836a1105ca8baee7de87b7fc1a58

Big Foot Conspiracy

Should people with small feet pay less for shoes? Students apply unit rates to calculate the cost per ounce for different sizes of Nike shoes, and use proportions to find out what would happen if Nike charged by weight.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=3bde32147b42863910a97a88c3f1805c54a4c651cf3fa2bc0ca29d7a602ee2f9

Been Caught Stealing

How hard is it to steal second base in baseball? Students use the Pythagorean Theorem and proportions to determine whether a runner will successfully beat the catcher's throw.

Topic: Geometry (G), Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=614ae6eadac6f5d18c3af8852a87a6d6c46387b4a542b41160ee5f3d890ea44b

AppleCare a Day

Should you ever buy an extended warranty? Students use percents and expected value to determine whether product warranties are a good deal.

Topic: Expressions and Equations (EE), Ratios and Proportional Relationships (RP), Statistics and Probability (SP)
Aws4 request&x amz signedheaders=host&x amz signature=7e484574ee4a8221c657029b90ff6dd8ec74024c61959f3cc32c4c03fc1ea35f

Wheel of Fortune

Is Wheel of Fortune rigged? Students use percents and probabilities to compare theoretical versus experimental probabilities, and explore whether the show is legit, or whether there might be something shady going on!

Topic: Ratios and Proportional Relationships (RP), Statistics and Probability (SP)
Aws4 request&x amz signedheaders=host&x amz signature=ae2ce5402d5aa554ac72a3a27a73f2a06e9f1797d81c052f38a883a2468dd747

Licensed to Ill

Who should buy health insurance? Students use percents and expected value to explore the mathematics of health insurance from a variety of perspectives.

Topic: Number System (NS), Ratios and Proportional Relationships (RP), Statistics and Probability (SP)
Aws4 request&x amz signedheaders=host&x amz signature=6973dfef63997de944801eef00453171d2a0e8afc24b385236cd795cb603b084

Viewmongous

When you buy a bigger TV, how much more do you really get? Students use the Pythagorean Theorem and proportional reasoning to investigate the relationship between the diagonal length, aspect ratio, and screen area of a TV.

Topic: Geometry (G), Similarity, Right Triangles, and Trigonometry (SRT)
Aws4 request&x amz signedheaders=host&x amz signature=4ef8eb8404e2dc3926115bf76b2a496f9e827e543eab28d222babc7dfbef3131

Time of Your Life

How much of your life do you spend doing different activities? Students use proportional reasoning and unit rates to calculate how much of their total lifespan they can expect to spend sleeping, eating, and working...and discuss how they'd like to spend the time that's left over.

Topic: Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=17f5ae0a8dd49b5073af077c2f03a155cc7e4edac1ad5c00531baa742c743618

Text Me Later

How dangerous is texting and driving? Students use proportional reasoning to determine how far a car travels in the time it takes to send a message, and explore the consequences of distracted driving.

Topic: Ratios and Proportional Relationships (RP), Circles (C)
Aws4 request&x amz signedheaders=host&x amz signature=db9544e939f36e7c7b27c785eb3fa57b4713e3175eb5238e2641d59d4d28626d

Spin City

What is the likelihood of winning at roulette? Students use probabilities and odds to examine the betting and gameplay of roulette, including where the infamous house edge comes from.

Topic:
Aws4 request&x amz signedheaders=host&x amz signature=e0b63ebe649a606bc48d634062d60e3f823a119e0a3de2b60ed74d38a0b2db7a

Pyramid of Sleaza

How can you make money in a pyramid scheme? Students learn about how pyramid schemes work (and how they fail), and use geometric sequences to model the exponential growth of a pyramid scheme over time.

Topic: Building Functions (BF), Linear, Quadratic, and Exponential Models (LE), Seeing Structure in Expressions (SSE)
Aws4 request&x amz signedheaders=host&x amz signature=2e54b23894da52ed736eb0bd7eda7f63a4ec08f17b23e9c4c9ec60981fc18581

Pizza Pi (MS)

Which size pizza is the best deal? Is it ever a good idea to buy the personal pan from Pizza Hut? Students use unit rates and percents, and the area of a circle to explore the math behind pizza bargains.

Topic: Geometry (G), Ratios and Proportional Relationships (RP)
Aws4 request&x amz signedheaders=host&x amz signature=273408d28a7fabbbb0acdf815c371df72e7f57412413180e20b09a9a091568c0

Pandemic

Why hasn't everyone already died of a contagion? And, if vampires exist, shouldn't we all be sucking blood by now? Students model the exponential growth of a contagion and use logarithms and finite geometric series to determine the time needed for a disease to infect the entire population. They'll also informally prove that vampires can't be real.

Topic: Creating Equations (CED), Linear, Quadratic, and Exponential Models (LE), Seeing Structure in Expressions (SSE)
Aws4 request&x amz signedheaders=host&x amz signature=e7a50f9d7a5a223e8c9c6d8b2546bc172608199e0904573fa0e539af02902a42

Pair-Alysis

How many different shoes can you design on NIKEiD? Students use the Fundamental Counting Principle to calculate how many color combinations are possible for the popular Nike Free Run running shoe, and also explore the "paralysis-by-analysis" that can come from too much choice.

Topic: Statistics and Probability (SP)