Tag: slope

When will he use up his chocolate milk account?

Brian’s son buys chocolate milk every few days to go with his lunch. His school creates an invoice that they send to parents every month that show the status of his milk account. Brian put $20.00 into this account to…

Really big shoe

Brian and his son were doing some shopping when he found this shoe.  Egad!  Could that be someone’s real shoe? In this activity student need to use a shoe size chart, patterns or linear modeling to try to figure out…

Are baseball games getting longer?

March 28th was opening day for this year’s Major League Baseball season. It’s a good time for some Major League Baseball math! In this activity students think about how major league game lengths have changed over time. Is there a…

Mess with ’em on April Fools Day

This day is known for pranks and puzzles.  Try one of these on April Fools Day. Ask students to analyze where I made my mistake.        PerplexingProblem.pdf For members we have solutions. PerplexingProblem-solution.pdf          CCSS: MP1,…

Big bucks

Mike Trout just signed a huge contract.  He’ll be receiving $430 million dollars playing for 12 years with the Los Angeles Angels.  Let’s take a look at some of the other big world sports’ contracts from the NBA, NHL, NFL, MLB…

Steepness and fall hiking

Fall is a beautiful time of year for hiking. Many students will be walking in the woods and mountains to enjoy the colorful leaves and the cool weather outside.  Let them combine what they are doing with their families and…

Movie tickets over time

How Much Will Movie Tickets Cost in the Future? – Updated! In this investigation, Brian looks at the changes in movie ticket prices over the last 38 years. Using his scatter plot (or his data) students analyze rates of change, make predictions…

Kilauea’s lava flow

The volcano, Kilauea, on the Big Island of Hawaii, has been active and erupting since 2008.  There are two lava flows at present and one is now approaching homes on the Big Island. This is another example of natural events…

Snow Days

Here are some pictures from a recent snowfall at my house.  How Much Snow Did I Get?  Have students make an estimate.  Ask them for a guess that is probably a little too low and one that is probably too…

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,…