LESSON PLAN

Time Concepts

Apothem Team

Grade 3 · Measurement

LESSON AT A GLANCE

Warm-up

5 min

Explore

15 min

Consolidate

10 min

Practice

12 min

Exit ticket

3 min

Warm-up

How long is a minute? Students predict, then test by sitting silently while the teacher times 60 seconds. Compare: who went too long? Too short? What helped you estimate? Heartbeat? Breathing? This calibration exercise makes the minute concrete.

Explore

Time unit exploration: measure or observe one example of each unit. Second: clap once. Minute: sit quietly while teacher times it. Hour: how many hours until lunch? Day: the sun rises and sets. Week: count 7 days on a calendar. Month: roughly one moon cycle. Year: the full seasonal cycle. Build a visual timeline.

Consolidate

Practice

Students complete a time-relationships chart, solve 4 unit conversion problems (e.g., how many seconds in 4 minutes?), and record three environmental time observations. Exit ticket: how many hours in 2 days?

Exit ticket

TIP Do not rush to clocks. This unit is about time concepts, not reading an analogue clock. Clocks appear in later grades. Focus on the relationships between units and on estimation.

WORKED EXAMPLES

How many minutes are in 3 hours?

1 hour = 60 minutes. 3 hours = 3 x 60 = 180 minutes.

If a ceremony takes 2.5 hours, how many minutes is that?

2 hours = 120 minutes. 0.5 hours = 30 minutes. Total: 150 minutes. Or: 2.5 x 60 = 150 minutes.

MATERIALS

•Stopwatch or timer

•Calendar (Gregorian and seasonal if available)

•Timeline strips

•Environmental time observation journal

•Seasonal wheel or chart

WATCH FOR

!Students often confuse minutes and hours in everyday language. Anchor each unit with a personal reference: a minute is about one TV commercial; an hour is one school period.

!Students may not understand that 1 day = 24 hours because they experience day as the light part only. Clarify: one complete rotation of the Earth = 24 hours = 1 day and 1 night combined.