Category: Algebra

These posts help students see patterns and relationships.

It sure is cold out … or is it?

Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, missing data for averaging, line of best fit, Google Earth, world locations,…

Linsanity

Jeremy Lin is the New York Knicks most startling player.  His story is exciting in that he graduated from Harvard in 2010 and was not immediately drafted into the NBA.  At first he was playing in the NBA Development League…

All Star Game 2012

The NBA All Star game is being held on February 26th.  Did you know that this was the third major professional sport all star game in the last month. The Pro Bowl and the NHL All Star Game were also…

Throwing up again

Anchorage, Alaska has received more than 100 inches of snow this winter.  The height of the tunnel to people’s homes is getting higher and higher. When they shovel an area, they have to throw the snow practically straight up from…

Negative Exponents? Ugh

This activity/post is a little different than are usual posts.  We look at a particular math concept and consider how to use context, models and CCSS math practices to increase student understanding.  This activity focuses on negative exponents.  Even if you…

When is Tebow Time?

Tim Tebow is the talk of the sporting world.  This Saturday he goes up against Tom Brady and the Patriots in the Playoffs.  I keep hearing about “Tebow Time” and I wonder at what point in a game that usually…

The Euro and the international debt crisis

Lately the news is filled with talk of the Euro, US foreign debt, the fragility of European monetary systems, and the interdependence of all of these crisis. In this activity students become familiar with the Euro, practice translating the Euro’s…

Parabolic Pee

Mr. Mark’s new little baby can make some amazingly tall streams.  Give your class a little chuckle as you introduce them to parabolic motion with this very short analysis of Mr. Mark’s baby’s talent. CCSS: 8.F.5, HSA.CED.2, HSA.REI, HSG.MG.3  Parabolic-pee.pdf…

QR codes ???

Your students have probably seen these images around and might not know why they are becoming popular for smart phone scanning … and possibly dangerous.  Students figure out the number of permutations of symbols that are possible with these 2-d…

Why Does it Stay in Orbit?

On Monday, the space shuttle Endeavor launched for the last time. The six astronauts on board docked this morning at the International Space Station to join the 6 astronauts and cosmonauts who live at the ISS. Combine current events, Earth…

Everything Royal Wedding

Friday, April 29, 2011, at 11:00 a.m. will be the much talked about wedding of Brittain’s Prince William and Kate Middleton. Engage and inform your students in an investigation of percents, proportions, exchange rates, time zones and Royal memorabilia.  everything-royal-wedding.pdf

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.…

Japan’s earthquake and the Richter scale

Today 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…

Federal deficit and debt in the news

National Debt Clock, Avenue of the Americas, New York City Congress has begun debating what should be included and what should be removed from the 2012 budget that President Obama submitted last week. The words debt and deficit are constantly…

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…