This activity is intended to be a wrap up activity for use after students know how to factor, use the discriminant, and use the quadratic formula. There are 12 quadratic equations to be sorted into three categories: 2 real irrational solutions, 1 or 2 real rational solutions, no real solutions. Students are then to choose two equations from each category to solve. While the intent is for use after students have some experience with imaginary solutions, the activity could easily be modified for Algebra 1 students by changing the number of equations that are to be solved. In addition to the sorting and solving, there are 5 error analysis questions to be completed at the end of the activity. The error analysis are limited to equations with real solutions.
The zip file contains two fully editable .doc files as well as two .pdf versions of the same documents
File 1) teacher notes, student instructions, & equations for the sorting activity
File 2) tree map for the equations to be pasted onto, error analysis questions, & detailed answer key