Radiation amounts

This investigation will help you and your students to better understand the magnitude of normal, background radiation and the more serious radiation exposure that comes from nuclear accidents.  Students will gain a realistic perspective on the seriousness of any event.

Our investigation on radiation measurements is pretty dense with information but allows students to become familiar with normal and abnormal radiation dosage and calculate yearly and lifetime dosages for people living in various regions and elevations in the US, Japan, and on the Space Station.


For members we have an editable Word doc and solutions.

radiation.doc        radiation-solution.pdf

Japan’s earthquake and the Richter scale

epicenter of March 11, 2011 earthquakeToday an 8.9 magnitude earthquake hit Japan causing a 23-foot tsunami that is leaving a path of destruction throughout the Pacific.
Keep your students involved in the world around them as you study the mathematics of the Richter scale and impress upon your students the hugeness of this event.

Click on these links to view the activity.


Unions and Collective bargaining

Protestors at the Wisconsin State House

There is a confrontation going on in Wisconsin. Governor Scott Walker is trying to enact legislation that would limit bargaining rights for most public employees in that state ... firefighters, teachers, police, child-care workers, and more. In response to this, state employees have been picketing in Madison for 2 weeks.
Labor unions in this country have been responsible for safety standards, the minimum wage, fair employment practices, and more. In Brian's latest data activity, students calculate for themselves who is better paid and by what percent. They are asked to consider which salaries are below the poverty level and to hypothesize how those salaries affect the daily lives of workers and their families.


Anthony versus Williams

Within a day of each other two of the NBA’s biggest stars were traded to NYC area teams, Carmelo Anthony to the Knicks and Deron Williams to the Nets. In this investigation we compare the stats and careers of the two players in an effort to understand which team came out ahead. You can expect your students to "Do Math", use critical thinking and apply proportional reasoning in this timely activity.


Population pyramids of Egypt

Pyramids of Giza

Egypt has been in the news lately as young people have demonstrated in Tahrir Square, demanded the resignation of President Hosni Mubarak, and begun the reorganization of their country's government. News agencies have show population pyramids to illustrate the proportion of Egypt's population that is under stress and involved in these demonstrations.

in this timely investigation students study population pyramids to understand the social, health, and future predictions that can be gleaned from this kind of chart?

Population pyramids from United States, Haiti, and Japan are also examined to further demonstrate the implications of the chart's shape and swells. Population percent growth and the needs and trends for the future are considered and calculated.


Census is complete and Apportionment begins

The 2010 U. S. Census is complete and state reapportionment is about to begin. The process of distributing the 435 Representatives appropriately to each state is a mathematically fascinating event. Engage your students in the calculation of the apportionment so that they will understand what only happens in the U.S. every ten years.

  • Students see the Priority formula An= P/√n*(n+1) and practice using it to determine which state should get the next Congressional seat.
  • Students learn what the ratio of voters to Representatives was originally intended to be and they calculate what that ratio has become.

apportionment.doc       apportionment.pdf