Number Sense

Figuring planting dates

It’s time to get ready to plant my garden again.  But here in Boston we have to start our seeds indoors to give them a head start before we can put plants outside. How should I figure out when to plant my…

Which is the best deal?

How do you calculate and justify which deal is a better savings?  By dollars saved?  By percent saved? By some other measure? The activity: WhichDealOffersMostValue.pdf CCSS: 4.OA, 4.NBT, 4.MD.A, 5.NBT, 6.RP, 6.EE, 7.RP, 7.EE.A

How much do the tickets cost?

Ooops! I was supposed to buy 4 adult and 2 children tickets, but I accidentally entered four children and two adults … 🙂 Can you figure out how much a child’s ticket and an adult ticket actually cost?

Giant chocolate bunnies

Topper Chocolate Easter Bunny from Dilettante Chocolates. What can you deduce about the bunnies (pictured in this activity) from the descriptions given … solid? hollow? cost per pound? cost per height? Anything else? The activity: GiantChocolateBunnies.pdf

“Go” in the news – man versus machine

March 9th was the first round of the competition between Lee Se-dol, one of the World’s best Go players, and Google’s artificial intelligence program “AlphaGo”.  The first and second matches took place in Seoul, South Korea and so far, AlphaGo…

It’s Girl Scout cookie time

Have you ever wondered how the income from Girl Scout cookie sales is distributed to the individual girls, to their Troops, or to the organization? In this activity students learn a little about the organization of the Girl Scouts, try to…

How much did the temperature change in Boston?

It’s been a crazy winter of extremes through much of the United States. Here’s an article, from the February 17, 2016 Boston Globe Newspaper by Matt Rochereau, with the degree swing whited out.  Have your students determine the temperature increase…

How much snow is that?

Start out this activity with: What do you notice? What do you wonder? How many inches of snow produced that pile?  How much snow in volume is on top of the car?  How much could that snow weigh? Students try to approximate…

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…

Windchill

When the weather person talks about wind chill did you ever wonder how they calculate that number?  In this activity students use the National Weather System chart to gauge wind chill, examine the patterns that correlate increasing wind and/or decreasing…

Pythagorean Triples + coloring

Pythagorean triples are not only handy for students to recognize but produce some interesting and lovely patterns.  We’ve combined a little coloring with our Pythagorean Triple pattern investigation to let your students relax while they color, view the beauty, and…

Data on the National Mall sites

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…

How Many Pennies did Otha Save?

Otha Anders used picking up pennies as a way to remember to pray.  In this 3-act activity we try to estimate how much he actually collected and stored in 5 gallon water jugs.  Kick off the activity with the article with…