Public learning track
Calendars, Cycles of Time, and Duration
1st Grade · Math · Open Global Math
9 lessons
Goal
Learners will read and locate dates on calendars, sequence days, months, and seasons, and compare event durations in standard units of time.
Featured Diagrams
Sequencing Yesterday, Today, and Tomorrow in Order
9 lessons
0 of 9 done
- 1Sequencing Yesterday, Today, and Tomorrow in OrderUp nextStart
- 2Reading the Days of the Week and Months of the YearPremiumNot started yet
- 3Exploring the Four Seasons and Yearly CyclesNot started yet
- 4Reading Calendars: Days, Weeks and MonthsNot started yet
- 5Locating and Writing Dates on a CalendarNot started yet
- 6Finding the Number of Days Between EventsNot started yet
- 7Days, Weeks, Months, and YearsNot started yet
- 8Estimating and Comparing Duration of EventsNot started yet
- 9Comparing Durations in Hours, Days, and WeeksNot started yet
Standards Covered
- OGM.2.MD.4Open Global Math Standards 2026™ · Math · Level 2 / Grade 1 (Age 6) · Grade 1Tell and write time to the hour and half-hour using analog and digital clocks; associate clock readings with daily events, sequence daily routines (morning, afternoon, evening, yesterday, today, tomorrow), and draw hands on clock faces.
- OGM.2.MD.5Open Global Math Standards 2026™ · Math · Level 2 / Grade 1 (Age 6) · Grade 1Understand calendar structures and cycles of time (days of the week, months of the year, seasons); read, write, and locate dates on calendars; describe and compare duration between events using standard and non-standard units (hours, days, weeks, months, years).
Curriculum Framework
1st Grade · Math · Open Global Math
1
8 lessons
Comparing and Ordering Length, Height, and Distance
Learners will compare and order objects directly and indirectly by length, height, width, and distance using reference objects and precise comparative vocabulary.
2
8 lessons
Non-Standard Measurement and Unit Iteration
Learners will measure lengths by iterating non-standard units end-to-end and understand the inverse relationship between unit size and count.
3
9 lessons
Standard Measurement: Centimeters and Meters
Learners will measure, estimate, and compare linear lengths of objects and line segments using standard metric units (centimeters and meters).
4
9 lessons
Comparing, Estimating, and Measuring Mass
Learners will compare, estimate, and measure mass using direct hefting, pan balance scales, informal units, and standard metric units (grams and kilograms).
5
8 lessons
Comparing, Estimating, and Measuring Capacity and Volume
Learners will compare, estimate, and measure liquid capacity and volume using direct pouring, informal containers, and liters.
6
11 lessons
Telling Time: Clocks, Hours, Half-Hours, and Daily Routines
Learners will read, write, and represent time to the hour and half-hour on analog and digital clocks, and sequence daily schedule events.
7
9 lessons
Calendars, Cycles of Time, and Duration
Learners will read and locate dates on calendars, sequence days, months, and seasons, and compare event durations in standard units of time.