11.)Create a scale for your model thermometer. Divide the distance between the two marks into 5-mm intervals. Starting with the lowest point, label the intervals on the straw 0, 1, 2, 3, and so on. Describe your scale below.
Connexus Teachers suck
well, i don't what else to say,
You must have made marks at two different known temperatures, Tlow and Thigh
Label Tlow 0
label Thigh something then every 5 mm make a mark
label them 1,2 ,3 etc until you reach Thigh
let's say Thigh is at 67 degrees C and Tlow was at 20 deg C
then your range was
67 - 20 = 47 deg c
then how may 5 mm intervals was that? call it n
your scale would be
47 deg C/n
so to get the temp in deg C from your scale
multiply the number you read on the straw by (47/n) and add 20
T = (temp range/n) x + Tlow