# Earth Day, 2017

…nald’s moves toward Antibiotic-free chicken – 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? 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 Methane Math – Carbon dioxide and methane are our two most prevalent human-contributed greenhouse gases. This holstein cow is one of many huge contributors to our methane production. Let students calculate… 0, 9

# Flag Art

…icial 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 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, 5

# Patriots’ Day

…necessary to organize it. We’ve asked some sensible and some surprising rate question. There’s a page-one activity that you can do as a class and the rest of the calculations can be worked on individually or in groups. CCSS: 5.MD.1, 6.NS.3, 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.1 Patriots’ Day – Students learn more about the difficulties of the Revolutionary War and calculate the rates of: Paul Revere’s ride The British crossing Boston to Cambridge by boat. The British marching through the night to… 0, 6

# Cheesy Goldfish crackers

…ll then truly be yummy math. Check out a second version of the activity (scroll down in the post) that solely focuses on and makes a connection between the ratio standards in grades six and seven. Goldfish Activity.pdf Addressed CCSS: 5.G.2, 6.RP.1, 6.RP.2, 6.RP.3, 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… 0, 10

# Glowing rectangles

…ng rectangles” and then get the activity going. Let kids work with partners or groups, see how far they can get on their own, before you need to bring the class together from some discussion on similar figures. Students should have a little experience with ratio tables and proportionality if they are going to try this activity without some direct instruction. Or use the activity as review and application of proportionality and similar figures. glowing-rectangles2015.pdf CCSS: 6.RP.1, 6.RP.2, 6…. 0, 5

# The Euro and the international debt crisis

…r with the Euro, practice translating the Euro’s value to dollar amounts, and work with comparisons of debt, gross domestic products, and average debts per person. Students will gain a better appreciation of what the news is all about. They will become familiar with the value of the Euro, can appreciate the complexity of the present financial crisis, and will be able to contribute to financial observations and discussions at home. CCSS: 6.RP.1 , 6.RP.2 , 6. RP.3 , 7.RP.1 , 7.RP.2 Euro.pdf For… 0, 5

# Sweet Easter mathematics

Giant chocolate bunnies What can you deduce about the bunnies … solid? hollow? cost per pound? cost per height? Anything else? 6.RP.A, 7.RP.A Holiday candy sales Which holidays are associated with candy? For which of those holidays do you think that the most candy is sold? What percents of annual candy sales do you think each holiday contributes? Students use a pie chart of information on candy sales to determine actual dollars spent for Halloween, Easter, Christmas and Hanuka, and… 0, 0

# 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, 4

# It’s Girl Scout cookie time

…raw a diagram to represent how all of the organizational components are related, compare the price per ounce of Girl Scout cookies to national brands and work out what percent and what dollar amount of each box of cookies is contributed to the the various segments of the Girl Scouts program. The activity: CookieTime2016.pdf For members we have an editable Word docx and solutions. CookieTime2016.docx CookieTime2016-solution.pdf CCSS: 6.RP.2, 6.RP.3, 7.RP.1, 7.RP.3, MP3, MP4 Check out all current… 0, 4

# Losing team in the playoffs, 2015

…am had the 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… 0, 4

# New baby giraffe

…f you grew at her rate until you reached adulthood? In this activity students work with rates, ratios and proportions as the consider the difference in growth rates between humans and giraffes. You can get the activity going with this super cute video below. The activity: Willow.pdf For members we have an editable Word docx and solutions. Willow.docx Willow-solution.pdf CCSS: 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.3… 0, 4

# Longest NHL overtime games in history

…e sure to see 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, 4

# April’s calf was born!

…At about 10:00 am, April 15th, April’s calf was born. Everyone will be talking about it and smiling constantly. Here’s some fun math stuff to bring with you for Holiday gatherings. The activity: April’s-calf.pdf For members we have an editable Word docx and solutions. April’s-calf.docx April’s-calf-solution.pdf CCSS: 6.RP.1, 6.RP.2, 6.RP.3, 7.RP.3… 0, 4

# Not enough mashed potatoes

…ent measures for various-sized Thanksgiving gatherings, to explain their thinking in calculating these figures and to judge how many servings could be created from 7 ½ pounds of potatoes. The Activity: not-enough-potatoes.pdf CCSS: 5.NF.6 , 5.NF.6 , 6.RP.1 , 6.RP.2 , 6. RP.3 , 7.RP.1 For members we have an editable Word doc and solutions below. not-enough-potatoes.docx not-enough-potatoes-solutions.pdf We’ve just been given an extension to this lesson. It’s-all-gravy.pdf and for members we have… 0, 4

# The Boston Marathon

…s as to the 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… 0, 4