# Longest NHL overtime games in history

…e if the Bruins and Blackhawks game one of the Stanley Cup falls in this top ten list of longest hockey games ever played and if the ratio of game minutes to TV minutes holds up to our 1:2.5 estimate. Enjoy! Longest_NHL_Matches_Ever.pdf For members we have an editable Word doc and solutions. Longest_NHL_Matches_Ever.doc Longest_NHL_Matches_Ever-solutions.pdf CCSS: 3.MD.1, 4.MD.2, 5.MD.1, 6.RP.1, 6.RP.3, 6.EE.6, 6.EE.7, 6.SP.3, 7.RP.2, 7.RP.3… 0, 15

# Cheesy Goldfish crackers

…, 6.NS.2, 7.RP.2, 7.RP.3, 8.EE.5 For members we have an editable Word doc and solutions and tips. Goldfish-cheesy.doc Goldfish Solutions & Teacher Tips.pdf We have a second version of the Goldfish problem that is meant to only focus on standards 6.RP.3 and 7.RP.2 . The task gives the costs of various cheese goldfish products at one store and asks students to compare the three products price per ounce or ounce per price in order to see which one is the best deal. This task connects back to… 0, 22

# Flag Art

…S. flag; decide how our artistic flags will be different from the official flag; make stars from regular pentagons, and finally create a flag design in honor of Memorial Day. The activity: Flags.pdf CCSS: 4.NBT, 4.NFB, 5.NBT, 5.NF.B, 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.1, 7.RP.2, 7.G.1 Pentagon Cut-outs: SmallPentagons.pdf RegularPentagons.pdf VariousPentagons.pdf For members we have an editable Word docx and solution/teacher tips. Flags.docx Flags-solution-teacher-talk.pdf Or use our previous… 0, 9

# 4th of July

…- A little ratio art might be a fun way to get ready for July 4th. In this past Memorial Day activity students measure; create whole number ratios for the official U.S. flag; decide how our artistic flags will be different from the official flag; make stars from regular pentagons, and finally create a flag design in honor of the fourth. CCSS: 4.NBT, 4.NFB, 5.NBT, 5.NF.B, 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.1, 7.RP.2, 7.G.1… 0, 9

# Does it pay to get educated?

…to-get-educated.pdf Ken Waldman of Newton Public Schools, modified our post to make it a little easier for his students. This is his modification: does-it-pay-to-get-educated-Waldman.pdf For members we have an editable Word doc, an Excel sheet of the data and chart, and solutions. does-it-pay-to-get-educated.doc income&ed-level.xlsx does-it-pay-to-get-educated-solutions.pdf CCSS: 4.OA.2, 5.NBT.5, 6.RP.3, 6.NS.3, 6.SP.3 6.SP.4, 6.SP.5, 7.SP.4, MP.1, MP.3… 0, 10

# The Boston Marathon

…fastest marathon time. We’ve gathered a lot of great data and asked some sensible and some surprising rate questions. Enjoy the conversation of page 1 of the activity as a class task and then set your students to work calculating the rest. BostonMarathon2015.pdf   For members we have an editable Word docx and solutions with teaching suggestions. BostonMarathon.docx BostonMarathon-solutions.pdf CCSS: 5.MD.1, 6.NS.3, 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.1 We also have a more historical activity… 0, 10

# Possible activities in honor of Martin Luther King, Jr

….RP, 7.G Data on the National Mall sites – Two data analysis activities about the National Mall. Who we honor – Students look at the individuals who are memorialized on the National Mall and, using fractions or percents, decide what they can notice about those we honor. Monuments most visited – Analysis of the visitor statistics of the National Mall and make observations. 3.NF.1, 6.RP.3, 7.NS.3… 0, 10

# Cruising

…lot of cruise ship mishaps and disasters this year. While these are in the news, let your students consider how these floating cities manage their resources and which of their needs are precarious as they calculate the per day and per cruise requirements. There’s plenty of room here for some fun extentions using our sewage numbers. Let us know of your ideas (or the kids)! Cruising.pdf For members we have an editable Word doc and solutions. Cruising.doc Cruising-solutions.pdf CCSS: 5.NBT.7,… 0, 10

# Losing team in the playoffs, 2015

…e worst record if many of the teams played a different number of games? Seems like a good time for students to think about ratios, percent and proportionality in a familiar context. Enjoy the playoffs … and the math. CCSS: 4.NF.2 , 6.RP.1 , 6.RP.2 , 6.RP.3 , 7.RP.3 The Activity: losing-team-in-the-playoffs2015.pdf For members we have an editable Word doc, teaching suggestions and solutions. losing-team-in-the-playoffs2015.docx losing-team-playoffs-solution.pdf Here is a great idea from math… 0, 10

# New Horizons spacecraft observes Pluto

…Do you have to know how many miles or kilometers an AU is to figure this out? For members we have calculations for these 3 questions and some more information about the instruments on board the New Horizon probe. NewHorizonsProbe&Pluto.pdf CCSS: 6.RP.3, 7.RP.3, 8.EE.3, 8.EE.4, HSF.BF.A.1 This activity gives a great opportunity to connect math & science. Students can work with rate conversions with standard or scientific notation. Students can model & solve these questions with… 0, 9

# Big Burger

…the “big burger” below. Thank you to Robert Kaplinsky (check out his great math activities on his website) for letting us know about the videos from the History Channel. Consider starting the activity with these videos. CCSS: 5.NF.6, 6.RP.1, 6.RP.2, 6.RP.3, 6.NS.1 The activity: BigBurger2014.pdf Three teachers in Georgia created a version of this post that they felt was suitable for their 5th grade students. Many thanks to Jenise Sexton, Michael Wiernicki, and Graham Fletcher for sharing their… 0, 9

# How Many Donuts is That?

…nversations you are having in class. What might come up? different areas or arrays, scale, estimation, volume and in particular volume by multiplying the base area by the number of layers. CCSS: 4.MD.3, 4.NBT.5, 4.OA.3, 5.MD.3, 5.MD.5, 6.G.1, 6.G.2, 6.RP.3, 7.G.1, 7.G.6, MP1, MP2, MP3, MP6, MP7 ExtraInfo.pdf Act Three: This news clip gives the solution. Sequel: Now that you know how many donuts are in the box, what dimensions and number of rows and columns could give this exact number of… 0, 9

# Cost of light bulbs – updated!

…from 5th grade through high school. Students might also want to compare the costs of each bulb over time for various number of bulbs in their home using this interactive Desmos graphing application. LightBulbs2016.pdf CCSS: 5.NBT.3, 5.NBT.7, 6.NS.3, 6.RP.3, 6.EE.1, 6.EE.9, 8.EE.8, HSF.IF.C.7.B, HSA.REI.C.6, HSA.CED.A.2 For members we have a Word docx, and Excel sheet with loads of data, and solutions and teacher suggestions below. LightBulbs2016.docx Bulbs2016.xlsx LightBulbs2016-solution.pdf… 0, 9

# Are these really 70% off?

We ran into this sale online. Is that advertisement correct? Do they just want us to believe their math and not question what is really 70% off? Is everything or anything really 70% off? The activity: Is-anything-really70%off?.pdf CCSS: 6.RP.3, 6.RP.A, 7.RP.3, 7.RP.A For members we have an editable Word docx, a PowerPoint presentation of the lesson, and solutions/teacher thoughts. Is-anything-really70%off?.docx is-anything-really-70-off.pptx 70%-off?-solutions.pdf If you want to search through… 0, 8

# McDonalds moves towards antibiotic-free chicken

…ntibiotic-resistant diseases in humans. What will the effects be on costs at the restaurant, costs in the supermarket and the cost and changes required of farm production? Does this seem like a good move? Why? Do the math! The activity: Antibiotics-in-our-food.pdf For members we have an editable Word docx and solutions. Antibiotics-in-our-food.docx Antibiotics-in-our-food-solution.pdf CCSS: 4.MD.3, 5.NBT.5, 5.NBT.7, 6.RP.1, 6.RP.2, 6.RP.3, HSG.MG.A.2, HSG.MG.A.3 MP6 Check out all of our… 0, 9