Absolute Value equations: “You are there” relevance

One of the most motivating experiences I can sometimes create for my students is a feeling of what it can be like as an adult in an interesting career.  The little extra time that kind of activity monopolizes is well spent.  The idea of absolute value is found everywhere something is being built or produced: … More Absolute Value equations: “You are there” relevance

Yard work and Algebra

Faulty distribution:  missed a spot with the fertilizer. Elimination:  fertilizer and water didn’t help.  It must be insects. Quadratic factoring of the variables:   I can fertilize or treat for pests, but not both.  I can apply weed treatment with fertilizer, but not with pest control.  I must water after pest control but not before. … More Yard work and Algebra

Slope, rate, and average rate of change: not so simple

I was kicking myself while grading Algebra I tests and realized I had not sufficiently emphasized how to interpret average rate of change for my students…I can’t count that question against them, for sure!  So now I’m on a mission to fix that.  In the process, I discovered that my biggest mistake was failing to … More Slope, rate, and average rate of change: not so simple

Alg 1 teachers often miss: Sequence equations vs. functions

Recognize that sequences are functions…for example the Fibonacci sequence, F.IF.3. Evidenced by the number of times I have seen sequence equations recently, an= a1+d(n-1) vs. f(n)=f(1)+d(n-1) +d, or recursively f(n) = f(n-1)+d I am assured I am not the only one that missed that shift the Common Core is  making. Students are learning to read … More Alg 1 teachers often miss: Sequence equations vs. functions