# Soda Menorah

…ok at the picture and have them take a quick guess: How many twelve packs of soda make up this giant menorah? Guess without counting. Come up with a reasonable range for the number of twelve packs = guesses that are too high and too low. Students in 3rd and 4th grade can focus on the picture in terms of area or arrays. No matter the grade level, your students might have many different methods for finding the number of 12 packs or cans in this display. Let kids have an opportunity to find the… 0, 2

# Longest NHL overtime games in history

Game one of the 2013 Stanley Cup between the Bruins and Blackhawks went into 3 overtimes. People stayed up way too late to watch the conclusion. The teams played 112 minutes and eight seconds of game time. The game went from about 7:15 central time to midnight central time. Did you know that Stanley Cup Playoff matches can last a really long time?There are usually few goals scored in hockey matches and a playoff match can not be finished as a tie. This has resulted in some very long NHL… 0, 0

# Someone ate my cake!

In this fraction operation and representation activity, students are asked to decide how much of my cake was eaten. Using fraction multiplication (or angle measure if that is where you need an activity) they find out how much someone owes me for what they ate. The task could also solve using ratio and proportion reasoning. Technology: This interactive fraction models app from NCTM Illuminations can be a useful tech tool allowing kids to recreate the left over cake while the application gives… 0, 0

# How many cars are there?

I came home from work to find that my son had his cars organized in a tight parking lot on our front porch. How many cars are there? Is it an array and if so, what size array could it be or what arrays are possible? How many rows and columns? What is reasonable, how much is too much? Below is a video version of our power point for the activity, which guides the class through steps in the activity. You can use the video, just beware to keep stopping the video at key points as the solution… 0, 0

# Pixar versus DreamWorks

Animated films are a billion dollar industry. The two biggest producers of animated films are DreamWorks and Pixar. The two have been going head to head for more than ten years now. So how do they stack up to each other? Which company is making more money on their films? According to critics, which company makes the better films? Conflict is created as students have to decide which animated movie company, DreamWorks or Pixar, has been more successful. Depending on grade level, students might… 0, 0

# Whole lot of cookies

Jennifer Fairbanks from Hopkinton, MA sent us this picture of the cookies that she baked in 4 hours using 13 eggs and 5 cups of sugar. Do you see some math here? Lot_of_Cookies.pdf For members we have an editable Word doc and solutions. Lot_of_Cookies.doc Lot_of_Cookies_Solutions.pdf Do you have an additional question to ask kids? If so leave it in the comments. Thanks and Happy New Year! CCSS: Depending on how you use this math picture you could be hitting many of the grade 3- 5 number or… 0, 0

# Timelines for the life and work of Martin Luther King

Martin Luther King, Jr. Monday will be the holiday celebrating the life and work of Martin Luther King, Jr. Help students learn about his work towards racial equality as they create one or two time lines. One time line is about the events and accomplishments of Martin Luther King Jr. The second timeline is about the progress made in America, so far, towards racial balance and equal opportunity. Students need to create correctly spaced timelines, enter the events that they find most powerful,… 0, 0

# Pick-a-brick wall at the Lego store

Clicking on this image will show it larger in a new window. There are walls at the Lego stores that are filled with individual Lego parts. You can fill a bucket and pick out exactly what you need. Use this PowerPoint activity to get your students conferring with each other, making guesses, and explaining their reasoning. Students try to determine the number of Lego bins on this giant wall. Students think about arrays and multiplication as they consider a reasonable quantity of Lego bins in… 0, 0

# Chocolates

Valentine’s Day is here again and that means candies and chocolate. In this activity students approximate the volume (through finding surface area) of three different pieces of chocolate. The chocolates are shaped like a heart, a bat (for Halloween) and a chocolate turtle irregular shape. Consider showing students our pictures of the chocolates either on paper or through an LCD projector from our site. Ask students to consider how they might determine which piece of chocolate contains the… 0, 0

# How long will it take you to trick or treat?

It’s Halloween and this is your neighborhood. How long will it take you to trick or treat at every house in your neighborhood? Possible conversation with students: How long will it take you to get from house to house? You should stay on the sidewalks. You may have to avoid landscaping and cars. How long will it take you to get your candy at each house? (Other trick or treaters could be in your way. You may have to wait for your friends.) Are you better off going back and forth across the… 0, 0

# Data on the National Mall sites

Martin Luther King, Jr. Memorial on the National Mall Clicking on this image will show it larger in a new window. Activity #1 – Look at the individuals who are memorialized on the National Mall and using fractions or percents decide what you can notice about those we honor. If you would like to show images of the monuments and memorials to your class, there is a slide show here. The Activity: MLKandMonuments.pdf For members we have an editable Word docx and solutions and teaching tips…. 0, 0

# How many movies can you see in one day?

Robert Kaplinsky at robertkaplinsky.com shared this lesson idea with Yummymath. With plenty of days off from school coming up you plan to spend a day at the movie theater. You want to see as many movies as possible. Create a schedule that shows the most movies you could see in one day. In Robert’s activity, students are asked to analyze a situation, consider contributing factors, and present a logical solution. There will be many correct “answers” to this exercise. The goal of the activity is… 0, 0

# What’s wrong with this picture?

Clicking on this image will show it larger in a new window. We’ve gotten used to believing what we read or see advertised. But sometimes the clerk doesn’t get the sales discount right or something seems a little off. Let students ponder this store menu and see if they can figure out what might just be a mistake. The activity: pizza.pdf For members we have an editable Word docx and solutions. pizza.docx pizza-solution.pdf CCSS: 3.G, 4.NF.B, 5.NF, 5.NBT, 7.G Thanks to Steve Wyborney for the… 0, 0

# Giant macaroon nutcracker, revisited

Clicking on any of these images will open them larger in a new window. Each year the Boston Ballet highlights the holiday season with the Nutcracker ballet. In 2014, the Boston Ritz Carlton Hotel’s chef, Andrew Yeo and his pastry team, created a gorgeous and massive Nutcracker cake of macaroons and fondant to celebrate the event. We have two activities about this amazing creation below. First we have a traditional worksheet dealing with ratio, volume, surface area and ingredient quantities. A… 0, 0

# Mom’s matzo ball soup

Passover begins this year on Friday evening, April 22nd, 2016, with a Passover seder dinner. Passover is one of the three high holidays in the Jewish calendar and celebrates the Exodus of Jews from slavery in Egypt. Let your students review fractions in this investigation on tripling my mom’s recipe and trying to use the recipe to create one humungus matzo ball. Passover always begins on the 14th day of Nissan on the Hebrew calendar but that day translates to a range of Spring days in the… 0, 0