Give your students engaging practice with the circuit format! Students will need to use technology (graphing calculator, on-line software) to calculate regression equations to advance in the circuit. At first students will be told what kind of regression, but towards the end of the circuit students need to try several regressions and compare the r-value to see which is the best fit. 16 equations total. Can be turned into task cards or even a scavenger hunt.
In addition, many of the answers are algebraically equivalent (i.e. y = x^2 + 4x + 4 might be what the students get from their technology but the answer appears in factored form as y = (x + 2)^2) so as to give the students critical thinking practice with previously learned skills.
As with all of the circuits, there is no key included since the answers are embedded in the circuit. If you suspect an error or get stuck, please do not hesitate to email me at firstname.lastname@example.org.