# Do I have enough wrapping paper?

…below) Students can then work towards determining if one sheet will completely wrap the box. Take the opportunity to share student ideas and reasoning. As an extension we ask students to consider what the smallest sized piece of paper is that can be used to wrap this box and if they can devise a way to know, in general, if the wrapping paper is going to be sufficient for a certain sized box. The activity: EnoughPaper.pdf Useful information: Useful-info.pdf CCSS: 6.G.1, 6.G.4, 7.G.6,… 0, 7

# How Many Donuts is That?

…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 donuts? Explore other… 0, 10

# Chocolates and area

…ts use, consider having students report their thinking through a doc camera. Focus on student's mathematical ideas and problem solving strategies. The concept of area as a measure of covering should be the theme of the sharing and class discussion. You may also consider using actual chocolates of different shapes and sizes as a class activity like two of my colleagues and friends did in their classrooms: CCSS: 3.MD.5 , 3.MD.6 , 6.G.1 , 7.G.4 , 7.G.6 Chocolate.pdf Chocolate-grid.pdf For members… 0, 8

# Chocolates

…ts use, consider having students report their thinking through a doc camera. Focus on student's mathematical ideas and problem solving strategies. The concept of area as a measure of covering should be the theme of the sharing and class discussion. You may also consider using actual chocolates of different shapes and sizes as a class activity like two of my colleagues and friends did in their classrooms: CCSS: 3.MD.5 , 3.MD.6 , 6.G.1 , 7.G.4 , 7.G.6 Chocolate.pdf Chocolate-grid.pdf For members… 0, 8

# Giant Snickers bar

…Wow! This snickers bar is huge! Act 1 – Big question = How many times bigger than a regular Snickers bar is this? What info would you like to know? How are you going to judge how much bigger this is … weight, dimensions, volume? This picture of the two Snickers bars together is courtesy of Jason Liebig from CollectingCandy.com. This is a regular Snickers with a Slice and Share. Act 2: Useful info: GiantSnickersInfo.pdf length of fun size Width of fun size… 0, 0

# Pre-winter holiday activities!

…Wrapping presents on the diagonal – Dr. Sara Santos has figured out the most efficient way to wrap presents with no waste. Why does this work? Let students wrap packages in class traditionally and this new way to encourage conversation and analysis. 7.G.6, 8.G.7, HSG.SRT.C.8, HSG.MG.A.3, MP3, MP4 Why do the dates of Hanukkah keep changing? – December 24th, is the first night of Hanukkah this year. I think it was much earlier in December last year. Why isn't it always on the same date? Students… 0, 44

# Foil prank

…ass add all of the answers together to make a grand total for the class. Using this information and the cost of the heavy duty aluminum foil, calculate the total cost. Note that it is \$27.56 for two rolls of 150 square feet each. That gives a unit rate of approximately 9.3 cents per square foot. Enjoy and huge thanks to Robert Kaplinsky for this interesting and tricky activity. CCSS: 6.G.4, 6.RP.2, 6.RP.3, 7.G.6, HSG.MG.1 Sources: http://robertkaplinsky.com/work/foil-prank/… 0, 7

# Monster cake

…roximate how many M&Ms she needs to finish her cake. When Brian tried to make the cake, he mistakenly added too much peanut butter. Now all the ingredients will have to be increased by what percent? Do the math! monster-cake2016.pdf For members we have an editable Word docx and solutions. monster-cake2016.docx monster-cake-solutions2016.pdf CCSS: 5.NF, 6.G.4, 6.RP, 7.RP, 7.G.6… 0, 7

# Black Friday, football, and giving

…display of creativity, engineering, and design as artists contribute cans of food for the shelters and food banks of their city. Students analyze, look for patterns, discuss solutions, and finally quantify the number of cans. 4.MD.3, 6.EE.1, 5.MD.5, 7.G.6, HSF.LE.2, MP.2, MP.3, MP.7 Black Friday again ( updated!) – Students calculate savings in dollars and percents as they analyze this year's sales. 6.RP.3 , 7.EE.2, 7.EE3 Consumer Spending – Students look for patterns in an historical view of… 0, 40

# Amazing LEGO Fireman

…lass estimates. How close will they be to the actual time for construction and quantity of LEGO blocks? Additional LEGO Fireman Pics: Clicking on an image opens the fireman's picture larger, expandable and in a new window. The activity: LEGOfireman.pdf More notes on the model from LEGO, LEGOCustomer-Service.pdf For members we have an editable Word doc and solutions with teaching suggestions. LEGOfireman.doc LEGOfireman-solutions.pdf CCSS: 6.G.2, 7.G.6, 8.G.9 ,HSG.MG.A.1, MP.1, MP.2, MP.3… 0, 6

# How many times bigger?

…robably too high. Act Two: What additional information would be useful here? (Clicking on any of these images will let you see them larger.) Act Three Solutions and teaching hints for members: CozyCoup-solution.pdf Sequel: The cozy coup manufacturers are making a giant cozy coupe that is roughly the same proportions as these cars. List possible dimensions of the giant cozy coupe. CCSS: 7.G.1, 7.G.6, 7.RP.3, HSG.MG.A.1, MP1, MP2, MP4… 0, 6

# Giant macaroon nutcracker, revisited

…? Dimensions? Size of a Macaroon? Students work to get a better estimate of the number of macaroons. Students share solutions, methods, and final answers. How did the final answers compare to the original guesses? Have your observations validated by showing the following newspaper clipping(available to all). Write-up with answers. CCSS: 3.MD, MP.1, MP.2, MP.3, MP.4, 6.RP.3, 7.G.1, 7.G.6, HSG.MG.A.1… 0, 6

# Wrapping presents on the diagonal

…grid of the 6 by 6 and 6 by 8 faces. Students can figure out the diagonal length by doing a little scale conversion work. How much wrapping paper does this method save? Should you just use a gift bag? The activity: Diagonal-wrapping-paper.pdf CCSS: 7.G.6, 8.G.7, HSG.SRT.C.8, HSG.MG.A.3, MP3, MP4 For members we have an editable Word docx and solutions. Diagonal-wrapping-paper.docx Diagonal-wrapping-paper-solution.pdf Finally ask students to try to explain why this diagonal method works…. 0, 8

# Shrinking Toblerone

…eck out a video news story on the delicious shrinking Toblerone bar here. Two sizes of Toblerone bars are now configured differently. How much did they lop off? How much did the price per gram of chocolate change? Is the price per gram still the same, if not how might you adjust the price of the products to make it fair? How much could you buy for \$1.00? Could you have designed it better? The activity: toblerone-reduction.pdf CCSS: 5.MD.3, 6.RP.2, 6.RP.3, 7.G.6, HSN.Q.A.1 For members we have an… 0, 5

# Canstruction

…How many cans does it take to build this structure? What information do you need to determine this? How did you determine your solution? What else did you notice that is mathematical? The Activity: Canstruction2015.pdf CCSS: 4.MD.3, 6.EE.1, 5.MD.5, 7.G.6, HSF.LE.2, MP.2, MP.3, MP.7 Act Three: For members we have a detailed solution and teacher tip page: Canstruction2015-solution.pdf and the Word docx if you would like to change the activity: Canstruction2015.docx You can also find a different… 0, 5