The 2011 National Football League draft of players is tomorrow, and I was inspired by a really interesting post over on Mr. Honner's blog regarding the NFL Draft Pick Trade Value chart and exponential decay. The gist is this: somewhere, sometime, someone came up with a chart that assigned a numerical value to every pick … Continue reading Do NFL teams actually use that draft pick chart when trading draft picks?

## Can someone help me improve this problem? (U-Haul rental rates ; systems of linear functions)

So the Emergent Math family moved houses this weekend (editor's note: they didn't actually move the houses, they moved the furniture inside the houses). We were given basically three different options for U-Haul rentals of increasing size and increasing price. This led me to believe that a nice systems problem could be constructed from this. I … Continue reading Can someone help me improve this problem? (U-Haul rental rates ; systems of linear functions)

## A stop-sign vs. a stoplight; when does each make sense? (Part 2, Math modeling)

I know it’s been a while since we visited this, but quick recap: We want to figure out when it is appropriate to have a stop-sign at an intersection versus a stoplight. In Part 1, we made some assumptions about stop-sign wait time modeling and developed an equation that gave us the total wait time … Continue reading A stop-sign vs. a stoplight; when does each make sense? (Part 2, Math modeling)

## Let’s graph this and/or make it better; What constitutes a “blown game?”

A few minutes ago the other day, NPR's Mike Pesca tweeted his mathematical rule as to what constitutes a "blown game" in basketball. That means if at any time a team is winning by (# of minutes left in the game)+4, and loses, that's a "blown game." There are 48 minutes in a NBA game … Continue reading Let’s graph this and/or make it better; What constitutes a “blown game?”

## A stop-sign vs. a stoplight ; when does each make sense? (Part 1, Math Modeling)

Artifact Can we use math modeling and/or equations to answer the question of when it becomes advantageous to install a stoplight vs. a stop-sign? Can we "ambush" students by having them create equations without really knowing it? What are some of the things we need to know about this? Guiding Questions How long does a … Continue reading A stop-sign vs. a stoplight ; when does each make sense? (Part 1, Math Modeling)

## A 90-yard punt ; Quadratics

So upon my call last week for quadratic activities, I got a ton of resources in my inbox. I'll post them soon after I've had a chance to look through them. Until then, here's something I cooked up that could go several different directions, depending on your students' needs. Artifact This terribly grainy video of … Continue reading A 90-yard punt ; Quadratics

## The Wacky Algebra of NFL Passer Rating

Artifact The following formula calculates NFL Passer rating. (wiki) (note: each component has a predetermined MAX and MIN value that appeared to be pulled out of thin air.) Personally, I would simply present this equation to students at the beginning of class and let them stare at it a while and try to figure some … Continue reading The Wacky Algebra of NFL Passer Rating