Subject: Are you able to get the temp. from feeder crickets?

hello, 
 I am doing a science fair projct on how doeos heat affect crickets 
chirping rate and does the equation t=1/4n+40 give you the temp. in F. 
I've been to so many pet stores and the best info I recieved on the 
cricket I have purchased was that they were once the house cricket. But 
after a long time of mass reproduction and evolution had set in they have 
lost the hard cartilige ridges on their backs. Any info and can u verify 
this? Thanx all the info u can tell me will be geatly appreciated. I would 
really like to go downstate so I can have a better chance at getting into 
Fenwick ( a  really good high school) thanx in advance=)

Re: Are you able to get the temp. from feeder crickets?