Montana Math MT.PLUS.ALG.MOD.3
The Standard
Use and interpret units correctly in modeling situations.
2026 Montana Mathematics Content Standards · Algebraic and Functional Reasoning
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students choose units that fit a situation and keep them consistent while calculating. They label and explain what quantities and rates mean in a model.
What Mastery Looks Like
- A student converts minutes to hours before finding a speed in miles per hour. They can explain that the rate in a cost model is dollars per item, not just dollars.
Common Misconceptions
- Students may divide miles by minutes but label the result miles per hour. They may treat a rate such as liters per minute as the amount of water collected.
How to Assess It
- Exit ticket: A cyclist travels 12 miles in 30 minutes. Find the speed in miles per hour, and explain what your answer means.
Lesson moves
Ways to Teach It
Measure a hallway in meters, time a walk through it, and calculate walking speed in meters per second.
Ask: A tank fills at 4 liters per minute; after five minutes, is the amount 20 liters or 20 liters per minute? Why?
Use C = 2g + 15, with g in gigabytes and C in dollars, for a card race labeling the units of 2 and 15.
Compare two cereal price tags, one priced per pound and one per ounce, by converting both to cost per ounce.
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Printable MT.PLUS.ALG.MOD.3 Worksheet
A ready-to-print activity worksheet aligned to MT.PLUS.ALG.MOD.3, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MT.2.MD.3
Estimate lengths using units of common measurement.
- MT.CORE.ALG.MOD.3
Choose and interpret measurement units in formulas, graphs, and data displays to understand problems and to guide problem-solving in modeling situations. This s...
- MT.2.MD.2
Understand the relationship between unit sizes and number of units by measuring a single object using two different units of common measurement.
- MT.PLUS.ALG.MOD.4
Choose a level of accuracy appropriate to limitations on measurement when reporting quantities in modeling situations.
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