c
Number and Operation Concepts: The student
has facility with the mechanics of operations as well as understanding
of their typical meaning and uses in application.
The
student correctly showed the calculations involved in finding the
volume.
g
Number and Operation Concepts: The student
carries out proportional reasoning in cases involving partwhole
relationships.
The
student successfully converted cubic centimeters to milliliters
and milliliters to liters.
k
Geometry and Measurement Concepts: The student
works with geometric measures of length and volume.
The
student computed the volume of the gas tank using the length, width,
and height of the gas tank.
b
Problem Solving and Mathematical Reasoning:
Implementation. The student makes the basic choices involved in
planning and carrying out a solution.
The
student employed the formula to find the volume of the gas tank,
converted the volume from cubic centimeters to milliliters and milliliters
to liters. Finally, the student concluded that with 3 liters of
gas the generator will run for 6 hours.
c
Mathematical Communication: The student organizes
work and presents mathematical procedures and results clearly, systematically,
succinctly, and correctly.
The
student provided a stepbystep explanation of the procedure used
to arrive at a solution.
Although
it is clear what the student intended, the use of the equals sign
here is incorrect.
The minor error (the inclusion
of “the” in the fifth line from the bottom) does not detract
from the overall quality of the work.
