Lessons in Units

CCSS Units
Aws4 request&x amz signedheaders=host&x amz signature=c503a35afe8942a5a8b8e6b48eec445407f970fafdd2809daccb63aadccd36d7

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=b12eb4061fd83b6635258d5d301d1b9cc2732d92c28e111bdc3bf9b9bfd038ec

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=9eaf796ae8095db70ee7f52834813da82e14c21bcc126fcac4287585b7991ee9

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=d68d5136ef8c1fc6b13e0f58bb9e85ac1152e354c36a80082b5e356898414ee3

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=2a827c3782cb9157764fad2bdee030b15d9c024e0a1062e5601b7f2d819ffa95

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=b36cb3b55a03cd4ce8a44aabf05ba7fc00283bae89b0c919f80eb01556bff2ef

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=954194ef83ebfb7c94faa152b2d879c42428a6a89de4bebfd0eb128944cdce81

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=f483f0611fcbad9e905c24b548927a0cbbf4a50d0adb5f97be50a9065e43d712

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=c3e2bb8a028e195404b11b964d646bf4d837d6edcab7c6fc6c1f59b9dd37f7f8

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=f1ca4d525be648b013f5cef584fd73a37d150ebcd8fb247c8da525373f13be09

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=c23c221b3c5eeb437c8b19144f7567cbcdbc00ee565c8fd1cd6d599b24dfff73

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=7db38afe662a07f8041cb31ce5a9ae3dd35e402dcfa52970f3527ea7743ed4ec

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=03c050a15f002f7f20b3563c01d87eebe784a72d65e9c39b42784bcaede67642

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=42faa5083198a13737045211c45dc067edcf7d362cbff9a1e34dc25921ec7117

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=980683d727b2b1384debe60ceb5d5549be7a1559f9676c0ce8a26109f8ae1f07

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)