Montana Math MT.CORE.ALG.MOD.3
The Standard
Choose and interpret measurement units in formulas, graphs, and data displays to understand problems and to guide problem-solving in modeling situations. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities.
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 make local data and graphs easy to read. They track those units through a formula, explain what a rate measures, and convert values when units change.
What Mastery Looks Like
- A student can choose inches rather than feet for a graph showing a few inches of snowfall. For S = 1.5d, where d is days and S is total snowfall, they can explain that 1.5 means inches per day.
Common Misconceptions
- Students may call the rate 1.5 inches instead of 1.5 inches per day. They may plot inch values on an axis labeled feet without converting them.
How to Assess It
- Exit ticket: A sample Browning snowfall table shows totals of 0, 1.5, and 3 inches on days 0, 1, and 2. Draw labeled axes, explain whether inches or feet makes a clearer vertical axis, and give the units of 1.5 in S = 1.5d.
Lesson moves
Ways to Teach It
Give pairs a sample Browning snowfall table, days 0, 1, 2 and totals 0, 1.5, 3 inches; have them graph it.
Ask students to write why 1.5 in S = 1.5d has units of inches per day when S is total snowfall.
Play unit-match: students pair snowfall tables, formulas, and graphs, then correct cards with mismatched inches, feet, and inches per day.
Use a public forecast for Browning, a Blackfeet community, to graph predicted snowfall by hour for families planning school travel.
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Printable MT.CORE.ALG.MOD.3 Worksheet
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