Thank you, mother and father, for all of those diapers

…s written by and shared with us by Andy Fehlner, 8th grade algebra teacher in Newton, MA. Thanks for sharing this timely activity with us, Mr. Fehlner! Want to see student work? The Blog: “Teaching Math Rocks” changed the title of the activity for High School students and they have provided student work samples. diapers2016.pdf diapers2016.docx diapers.xlsx diapers2016-solutions.pdf CCSS: 6.EE.9, 7.EE.4, 8.F.2, 8.F.4, 8.EE.8, HS.F-IF.8.B, HS.F-LE.2, HS.F-LE.5, MP7, MP8… 0, 11

Getting a new iPhone – which plan should I choose?

…d construct new ideas.With our activity students select a plan and complete their graphs. Consider posting the graphs up on the wall (or over a document camera). Have the rest of the class identify which cell phone deal matches their graph. Finally students compare paying for the phone up front or with installment payments using T-Mobile, Verizon, Boost, Sprint or Consumer Cellular. Which will be the best deal in the long and short run? The activity: Which-cell-plan2017.pdf CCSS: 8.F.3, 8.F.4,… 0, 7

It sure is cold out … or is it?

Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, missing data for averaging, line of best fit, Google Earth, world locations, linear review, extrapolation … This lesson is chocked full of interesting mathematics and world awareness. cold-out.pdf For members we have Word docs, solutions and graphs. cold-out.doc cold-out-solutions.pdf CCSS: 6.SP.5,… 0, 3

How Much is a Tweet Worth?

…ESPN. Since the data is roughly proportional and linear, this activity could be used in a variety of ways. We could assume the relationship is roughly proportional, meaning 6th and 7th graders could work in the realm of 6.RP and 7.RP with this problem. The data is extremely linear, almost a perfect correlation, so you could use this activity as a way to introduce linear relationships or focus more on building a line of best fit. The activity: Tweeting.pdf CCSS: 6.RP.3, 7.RP.2, 8.EE.5, 8.F.4,… 0, 6

iPhone 7 opening weekend

…ing Activity the data and sliders are all set to go. Let your students rough out their models & predictions as they work through the activity. The Activities: iphone-opening-sales-bar-graph2016.pdf iphone-opening-sales-scatter-plot2016.pdf CCSS: 8.F.3, 8.F.5, 8.SP.2, 8.SP.3, HSF.IF.B.6, HSS.ID.B.6, HSS.ID.C.7, HSF.LE.A.1, HSF.LE.A.2 For members we editable Word docxs; iphone-opening-sales-bar-graph2016.docx iphone-opening-sales-scatter-plot2016.docx an Excel spread sheet of… 0, 6

Should I replace my toilets?

…I'm trying to be more savy about wasting our resources. I have really old fashioned toilets and I'm trying to figure out if I should invest in saving water. Can you help me? The activity: PottyTalk.pdf CCSS: 8.F.3, 8.F.4, 8.F.5, HSF.IF.B.4, HSF.IF.B.6, HSF.IF.C.7, HSF.IF.C.9, HSF.LE.A.2, HSF.LE.B.5 For members we have an editable Word docx and solutions. PottyTalk.docx HowMuchWaterWeUse.xlsx PottyTalk-solution.pdf Click here to see all of our activities listed in one place…. 0, 6

Super Bowl ad costs still increasing

…Super Bowls. This could be an awesome activity to do in your class in the days leading up to or right after the Super Bowl, when everyone is talking about those commercials. The activity: expensive-ads2017.pdf For members we have solutions for this investigation, an editable Word doc and an Excel sheet of the costs. expensive-ads2017.docx rising-sb-ad-cost2017.xlsx expensive-ads2017-solution.pdf CCSS: 8.F.3, 8.F.5, 8.SP.1, HSS.ID.B.6a, HSF.LE.A.1, HSF.IF.C.8b… 0, 5

Ebola updated

…is very concerning. We've gathered the present numbers again for you and your class to study, analyze, and look for trends, hope, suggestions, and conclusions. Spread-of-Ebola-updated.pdf Ebola-student.xlsx For members we have a teachers Excel sheet with graphs, an editable Word docx, and some observations and solutions. Spread-of-Ebola-updated.docx Ebola-teacher.xlsx Spread-Ebola-updated-solution.pdf CCSS: 8.F.A.2, 8.F.B.4, HSF.IF.B.6, HSF.IF.C.8.b, HSF.LE,A.1,b, HSS.ID,C.7, HSM… 0, 5

Growth of Facebook update

…, meteoric, or something else? Will the number of Facebook users continue to grow or will it soon be in decline? Let your student analyze the numbers, pick a side and duke it out with math. The Activity: AnnualFacebookGrowth.pdf For members we have solutions and an Excel file with the data and graph. AnnualFacebookGrowth.docx FacebookData.xlsx AnnualFacebookGrowth-solutions.pdf CCSS: 7.RP.3, 8.F.4, 8.SP.1, F-LE, F-IF.6, HSS.ID.B.6… 0, 5

Three great World Cup activities

World Cup ranking – Students explore the ranking formulated from each team's previous 4 years of play in their geographical divisions. The formula is complex and weighted. Is it fair? 5.OA, 5.NBT, 5.NF.B, 6.NS.B, 6.EE, 6.SP, 7.EE, 8.F, 8.SP, HSA World Cup draw – How did FIFA sort the 32 world's strongest soccer teams and support each geographic region? Are the first round groupings fair? 7.SP, HSS.MD, MP.1, MP.3 World Cup – How many ways – Students examine the rules and order of play and… 0, 4

Saving Water Bottles

…ic bottle saving device. How effective is it and is it worth the trouble? This is a great task for graphing, fitting lines and solving equations, all in an in important context. The activity: WaterBottles.pdf For members we have an editable Word docx, and Excel file of computations and graphs, and solutions with added information. WaterBottles.docx ReusingWaterBottles.xlsx WaterBottles-solutions.pdf CCSS: 8.F.4, 8.SP2, 8.SP.3, HSF.LE.A.2, HSS.ID.B.6, HSS.ID.C.7 Save Save… 0, 4

Earthquake magnitudes, Nepal

…he logarithmic Richter magnitudes. Discuss linear versus exponential growth and if students are ready, get into logs, either base ten or e. You might also use our graph of Richter magnitudes at Desmos.com. earthquake-richter-scaleApril2015.pdf CCSS: 8.F.4, 8.F.5, HSF.LE.A.1, HSF.LE.A.2, HSF.LE.A.4, HSF.LE.B.5 For members we have an editable Word docx and solutions. earthquake-richter-scaleApril2015.docx earthquake-richter-scaleApril2015-solution.pdf Richter-scale-vs-energy-yield-2.xlsx Check… 0, 4

How much should you spend on this sale?

…w does this graph help you see which price points are the best deal? Act Three: Word doc, solutions and graphs. A great way to sum up the lesson is to ask kids… "if you are going to buy \$74 worth of clothes then you might as well buy \$______ worth of clothes." For members we have editable word docs, Excel Files & Solutions: Discounts2014.docx Gap-data.xlsx discounts-solutions2014.pdf Solution-graphed.png CCSS:6.RP.3, 7.RP.3, 8.F.4, 8.F.5, HSF.LE.B.5, HSA.CED.A.3 Check out all current… 0, 4

Lifespan of a meme, the Harlem Shake

…filmed it on February 2nd. Now the whole world knows them and their dance … weird. This is the story of the life of a meme. Students explore the story and amazing growth of this video in the social media world. What can you tell from this graph? Check out our math activity below: Harlem-Shake.pdf For members we have an editable Word doc and solutions. Harlem-Shake.doc Harlem-Shake-solutions.pdf CCSS: MP1 , MP2, MP3 , 8.F.3 , 8.F.5 , HSS.IC.B.6 Thanks to Ben McGraw, Newton, MA teacher, for… 0, 4

In honor of Presidents’ Day find out about President’s pay

…raphed and ready to be analyzed and modeled. Or discuss Presidential Pay over time using the interactive plot.ly graphs at the bottom of this post. The activity: Presidents-pay2017.pdf For members we have an editable Word docx, an Excel sheet of our data and graphs, and solutions. Presidents-pay2017.docx presidents-salaries2017.xlsx Presidents-pay2017-solution.pdf CCSS: 6.SP.4, 6.SP.5, 7.RP.3, 7.EE.4, 8.F.4, 8.F.5, HSA.REI, HSF.IF.4 See our graphs on plot.ly…. 0, 4