Guide

cont.
G.9
Mechanisms Gear Ratio Exercise #2: Expressing Ratio and Reduction
(Grades 4-8)
Student Name(s):
Teacher/Class: Date:
Instructions:
After learning about Expressing Gear Ratio and Gear Reduction from section G.3, demonstrate what
you have learned by calculating and writing in correct answers. You may also build and use the VEX IQ
Gear Ratio Simulator along with 12-tooth, 36-tooth, and 60-tooth gears to help nd answers.
Driving Gear
(Input)
Driven Gear
(Output)
Gear Ratio Gear
Reduction
Simplied Gear
Reduction
Is Speed
or Torque
increased?
36-tooth 36-tooth
: / /
12-toot h 60-tooth
: / /
36-tooth 12-tooth
: / /
36-tooth 60-tooth
: / /
60-tooth 12-tooth
: / /