Lessons in Units

CCSS Units
Aws4 request&x amz signedheaders=host&x amz signature=667165f0d722a5bca864eb3a6800614823c460eda01facfb0ee572e72463e313

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=75f7fed694f5a86beb0eadc98100c6e3c9336f55bd76997c8cf00416c5c4fc7d

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=228c9f6cd183fd58a0b206f84ce18d3dae499a53a3a9d3245fdf014d4256fac9

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=2812f9ca0b7edb58d22c4798bd151aa908764b88e5e05767e433114fa31c3db7

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=968a036f92d52ee5aa418a846d184d0b77c4d9e6f0ad2ed823cce6c516c516f2

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=38897e682be5e8f3b0daca9ae0c6f41c80e4bf3b143766ce154482ca39362e83

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=b7563e7c52cb6b930673d8ee3d1f8f693bc193f6e227d7f30788a876e8c9da97

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=a1ff954045568c372e22e90f8bb911c250cc03fdccb3b0520be1aa66424b7ce8

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=2fddf45933efafb4904df2485819afee31708a63f8a24b85dbc81a9e2b638401

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=ad1cfc1b22e73fdc1d7cb03a89608e34c6be8408ad509b1adc5cab40e823630d

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=e79ced142c3047b3892247781423c1eb86feb01ebcc666280b954957662b065e

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=7d9461b7092b0f1d9d20d33fec00883939e55421998dcf403d315bcda9e91979

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=72ace1bc2eea7a02807ccc59eb6dadc0f3bde2bdb38a98561c56022b150e65d5

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=fef883eec59c6bfb2b99aaeba7043771a85eadac1515d46e82474564c09d46fa

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=44a2dbb6c5eb8cb95ccb1e075278d08a2308b4fe8fefba0c0a019411b7394898

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)