Algebra

These posts help students see patterns and relationships.

Millions of nematodes – How much would you pay?

Beneficial nematodes can kill destructive soil pests in your garden and lawn.  They are tiny worms that infect the grub and larvae phase of these insects and kill them.  To my surprise, a shipment of nematodes includes 10 million worms ……

Typhoon Neoguri approaching Japan

A powerful typhoon has just passed Okinawa, Japan’s southern-most prefecture, and is expected to continue to be very powerful.  What is a typhoon?  How are they scaled? In this activity students become aware of various storm rankings and severity as they…

Pizza Deals

Check out the new Flatizza from Subway. If the slice of pizza is from an 18-inch pizza cut into eight pieces, which deal is better when comparing area of pizza and cost?  How does the area of a square pizza…

July 4th and fireworks … on your calculator

Let your students experiment with their graphing calculators to create a nice 4th of July display?  We’ve written a brief activity that leads students with questions to manipulate parabolas, to adjust their calculator windows, and to help celebrate the Fourth.…

Games with dice

Time to let students become naturally curious about probability.  In this activity students work in teams to record the frequency of rolled dice combinations. They observe the difference between experimental and theoretical outcomes and consider how sample size affects how close…

The longest day

Sunrise on summer solstice at Stonehenge On June 21st, early Saturday morning, at 6:51 am EST, the Earth’s North Pole will be tilted as far towards the Sun as it will ever be in the year.  This marks the longest day…

World Cup – How many ways?

present world cup scores How many games are played in each round of the World Cup?  In the opening round each of the four teams in a group must play each other (round robin format).  From then on each round…

Two suggestions for Father’s Day

Blueberry Muffins is a short activity that asks students to change the amounts in a blueberry muffin recipe to multiples of and fractions of a ¼ cup measuring cup (multiplication and division with unit fractions).  fathers-day-muffins.pdf For members we have an…

NBA Finals, 2014

Celebrate the NBA and NBA Finals by involving your students in interpreting what can be deduced from graphical representations.  In this activity students consider scatter plots, circle graphs, bar graphs, Venn Diagrams and the concept of mean. To start the…

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…

World Cup rankings

In December the soccer teams with the strongest world rankings were chosen to play in the once-every-4-years World Cup. The team rankings are calculated in a pretty complex manner. How are the 32 teams selected? Students can explore the ranking…

The growth of Godzilla

Image from Kris Holt: http://www.policymic.com/articles/76357/the-scary-way-godzilla-has-evolved-through-the-years-in-one-chart The new Godzilla movie is out at theaters.  His first appearance was in 1954 when he was created in Japan and crushed Tokyo.  He appears to have grown.  Do the film-makers have him growing appropriately?  Lets…

Memorial Day 2014

Your students will learn about the meaning and history of Memorial Day as they look for patterns in the date and analyze casualty totals. Brian’s investigation will also help your students become aware of the intent of the Memorial Day holiday…

Dog years

Jorge My dog, Jorge, has just turned 9 years old.  He seems like a puppy to me but I wonder how old he is when compared to a human’s age.  He’s definitely not 63.  Hmmmmmm … Read tables and graphs,…

Is college affordable?

Widener Library, Harvard University Whether you or one of your siblings is going off to college next fall, it is useful to know how much colleges cost.  Not going to college this fall? No worries, we can use the information…