Measurement — Time and Calendar

Time is elementary's first non-decimal system. 60 seconds per minute, 60 min per hour, 24 hours per day, 7 days per week, 12 months per year. Indirect aim: scheduling, history awareness, preparation for time-based physics.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Operations
• Level: Ages 6-8

Objectives

• Tell time on analog and digital clocks
• Understand seconds, minutes, hours
• Read and use a calendar
• Compute elapsed time

Materials

• Large analog clock (teacher clock)
• Wall calendar
• Stopwatch
• Scheduling problems

Instructions

1. Read analog clock: hour hand, minute hand. 2. Read digital time. 3. Convert: 90 min = 1 h 30 min. 4. Elapsed time: 'Started at 10:15, ended at 11:45. Duration?' 5. Use calendar: count days, weeks between dates. 6. Schedule a multi-step task. 7. Use stopwatch for short durations. 8. File.

Educator tip

Elapsed time is tricky across hour boundaries. Use concrete visualization.

Assessment

Observe clock reading, elapsed time computation, and scheduling.

More from Mathematics

• Measurement — Temperature and Thermometry
• Algebra — Simplifying Expressions
• Algebra — Solving Multi-Step Equations
• Order of Operations — PEMDAS
• Probability — Coin, Dice, Cards
• Statistics — Mean, Median, Mode
• Negative Numbers — Full Operations
• Linear Graphs — Slope and y-Intercept