Mrs. O'Grady wants to know if doing Tabs with her science class really helps them learn the material better. She decides to test this out in her two 10th grade science classes. In both
classes she gives the same amount and type of notes and homework, but in one class she
does labs and the other class she does no labs. At the end of the unit, she gives both classes
the same unit test and compares the class averages. The group that did labs scored 15 points
higher on the test.
13. Independent Variable
14. Dependent Variable
15. Hypothesis
16. Control group
17. Experimental Group
18. Constants
19. What was her conclusion?

Describe pasteur’s results and how they disprove spontaneous generation.

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.