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Perhaps, I do not understand the original question. Is Tracy asking if students need to convert from one measurement system (inch-pound) to the other (SI)? My understanding is that the new standards do not suggest the need to convert between only within the same system. Is this correct?
I briefly looked again, I could not find any text in the standards suggesting the need for students to convert problems from customary (inch-pound) units to SI units. This contradicts some of the sample PARCC prototypes and the approved text book we reviewed in Louisiana- both require a student to convert between systems not just within one.
This is what I found:
4.MD.1. Know relative sizes of measurement units within one system of units including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a two-column table. For example, know that 1 ft is 12 times as long as 1 in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1, 12), (2, 24), (3, 36), …5.MD.1. Convert among different-sized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multi-step, real world problems.
Who is responsible for making sure that the standardized tests align with the common core standards?
(Note: I understand the difference between the metric system and SI.)
I am so glad to have this topic discussed. My reading of the standards taken below is that students should convert within the same system not between customary (inch-pound) units and metric units. Is this not correct?
(http://www.corestandards.org/Math/Content/5/MD)
Convert like measurement units within a given measurement system.
CCSS.Math.Content.5.MD.A.1 Convert among different-sized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multi-step, real world problems.In reviewing the sample PARC test questions and the approved textbooks/ workbooks, conversions between the two different “systems” are still required and I assume prevalent based on the fact that I am only looking at sample questions?
