Montana Math MT.K.MD.5

MathKindergartenMeasurement and Data

The Standard

Explain time in days, months, years, and seasons.

2026 Montana Mathematics Content Standards

Teacher's field guide

What Students Need to Do: Students use a calendar to show what one day and one month look like. They explain that months make up a year and that seasons change during a year.
What Mastery Looks Like: A student can point to one date, name its month, and say that twelve months make a year. They can name the current season and tell which season comes next.
Common Misconceptions: Some children think a calendar page shows one day instead of a whole month. Others think the season changes whenever the weather changes, or that a birthday happens every month.
How to Assess It: Show a monthly calendar and four season cards. Ask each child to point to one day, name the month, choose the current season, and say how many months make a year.

Lesson moves

Give pairs a year calendar and four season picture cards; have them circle today, find their birthday month, and place today's season card.
Ask, 'If your birthday was yesterday, when will it happen again? What will change on the calendar first?'
Play 'Which lasts longer?' with day, month, season, and year cards; partners choose a pair and explain their choice.
Use a school holiday calendar; students find a holiday, name its month and season, and explain when it will come again.

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