CBSE Class 1 · Mathematics
How do I Spend my Day? (Time)
Official NCERT chapter from Joyful Mathematics (English) (book code aejm1). ExamMaster notes are original teaching at CBSE Class 1 depth.
This lesson follows the official chapter “How do I Spend my Day? (Time)” in Joyful Mathematics (English). The words below are ExamMaster’s teaching, not a paste from the book. Use the NCERT chapter for the classroom sequence; use these notes to hold the idea without copying exercises or figures.
- CBSE Class 1
- Easy level
- 8 concepts
1A day is an order: morning, afternoon, evening, night
Those four parts come in one order. Afternoon does not come before morning.
The order is the day. A clock mark can wait.
Figure. A day is four named parts in one order. Afternoon cannot sit before morning; the arrow only runs this way.
How it works
- Say morning firstThe start of the school day story.
- Then afternoon, evening, nightKeep that order.
- Refuse a swapNight before morning is a new day, or a broken order.
2Sunrise and bedtime are ends of that order
Sunrise sits at the morning end. Bedtime sits at the night end. They are ends, not extra parts.
You can place events between those ends without reading a clock.
Figure. Sunrise opens the morning end. Bedtime closes the night end. They are the two ends of the same order, not two extra parts of the day.
How it works
- Name the morning endSunrise.
- Name the night endBedtime.
- Place an event betweenLunch sits after sunrise, before bedtime.
3Yesterday, today, tomorrow sit on a calendar line
Yesterday is the day before today. Tomorrow is the day after. The three words are a line, not three moods.
“Tomorrow” does not mean “later this afternoon”. That is still today.
Figure. Yesterday, today, and tomorrow are three neighbouring days on one line. They are places, not moods.
How it works
- Stand on todayThe day you are in.
- One step backYesterday.
- One step forwardTomorrow.
4A clock face is a turning track
The hands travel a circle. They do not jump to a favourite number. The track is the path of the day in hours.
This chapter names the track. It does not yet demand “half past” arithmetic.
Figure. Hour marks sit in one repeating order. Open the clock into this track: the hands walk 12, then 3, then 6, then 9, then 12 again — they do not jump to a favourite number.
How it works
- See the circleThe face is a track.
- See a hand moveIt follows the track.
- Refuse a jumpNo skipping the path.
5The short hand names the hour
The short hand points near an hour mark. That mark is the hour name. The long hand is a later, finer story.
If you read the long hand as the hour, the day-sentence is wrong.
Figure. On a square hour board the short hand names the hour. Here it points at 3, so the hour name is 3. The long hand is a later, finer story.
How it works
- Find the short handThe thicker, shorter one.
- See the hour mark it is nearThat is the hour.
- Leave the long hand for laterNot this sentence.
6Events have a duration you can compare
A song can last less than lunch. Duration is “how long”, not “when”.
You can say shorter or longer before you say “o’clock”.
Figure. Duration is how long, not when. The lunch bar is longer than the song bar, so lunch lasts more minutes.
How it works
- Name two eventsSong, and lunch.
- Ask which lasted moreThe longer duration.
- Do not need a clock yetCompare is enough.
7Seasons are a longer repeating cycle
Summer, rains, winter (or your local season words) come again next year. That is a cycle longer than a day.
A season is not a time of day. Do not put “winter” between morning and afternoon.
Figure. Seasons restart next year. Summer, rains, then winter, then summer again — a longer cycle than a day.
How it works
- Name the local seasonsThe ones you actually live.
- See that they restartNext year, the first season returns.
- Keep them off the day-orderA different cycle.
8A sequence of a day is not yet “o’clock” arithmetic
Morning-then-afternoon is an order. “2 hours after 4 o’clock” is a later chapter. Do not borrow it.
Hold the order. Let the next official time chapter add the arithmetic.
Figure. Morning-then-afternoon is an order you can line up today. “2 hours after 4 o’clock” is elapsed-time arithmetic from a later chapter. Do not borrow it.
How it works
- Stay with the four partsMorning to night.
- Place events in that orderNo minute sums.
- Stop before o’clock sumsThat is the next idea, not this one.
Yesterday is
- The day before today
- Later this afternoon
- A season
Yesterday sits one step back on the calendar line.
Notes
- The official chapter title is “How do I Spend my Day? (Time)”. Teach the school test for that title, not a contest shortcut.
- If a step needs a later class, stop. The next official chapter will pick it up.
Reference tables
Morning, afternoon, evening, night. A season is a longer cycle.
| Part of the day | A sample event |
|---|---|
| Morning | Sunrise, school start |
| Afternoon | Lunch, play |
| Evening | Home time |
| Night | Bedtime |
Recap
Hold these pegs from the official chapter “How do I Spend my Day? (Time)”. The wording is ExamMaster’s teaching, not a textbook recap.
- A day is an order: morning, afternoon, evening, night
- Those four parts come in one order. Afternoon does not come before morning.
- Sunrise and bedtime are ends of that order
- Sunrise sits at the morning end. Bedtime sits at the night end. They are ends, not extra parts.
- Yesterday, today, tomorrow sit on a calendar line
- Yesterday is the day before today. Tomorrow is the day after. The three words are a line, not three moods.
- A clock face is a turning track
- The hands travel a circle. They do not jump to a favourite number. The track is the path of the day in hours.
- The short hand names the hour
- The short hand points near an hour mark. That mark is the hour name. The long hand is a later, finer story.
- Events have a duration you can compare
- A song can last less than lunch. Duration is “how long”, not “when”.
Practise How do I Spend my Day? (Time)
Reading is free and needs no account. Practice, mocks and progress live in the app.
- A 4-question practice set that ends the chapter
- 1 quick check with worked explanations
- Timed mocks scored with the real marking scheme
- Readiness tracked per topic, kept on your device