Mathematics 2
SS2.2
Demonstrate understanding of non-standard units for measurement of mass by:
- describing the choice and appropriate use of non-standard units
- estimating
- measuring
- comparing and analyzing measurements.
[C, CN, ME, R, V]
Indicators for this outcome
| (a) |
Defend the choice of a non-standard unit for measuring a mass in a situation relevant to one's self, family, or community. |
| (b) |
Estimate the mass of a personally relevant object using one's own choice of standard unit. |
| (c) |
Identify a non-standard unit for measuring mass that would not be a good choice in a particular situation and explain the reasoning (e.g., to measure the mass of a desk, it would not make sense to use an eraser as the standard unit because a desk has so much more mass than an eraser and so it would take too many erasers, or to measure the mass of a library book using the standard unit of a student in the class because the student already has a greater mass than the book). |
| (d) |
Compare estimates of the mass of the same object determined using different standard units and provide reasons for different values being stated for the measurements. |
| (e) |
Explain why the same non-standard unit should be used to determine mass measurements that are to be compared. |
| (f) |
Compare and order sets of related objects according to mass measurements and explain the reasoning. |
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