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Parv's Birthday and the Mystery of 29 February
Lesson
Students often confuse 'every four years' with 'every four years counting from any year' — anchor the pattern by listing 2020, 2024, 2028 on the board and asking what the gap always is. The printed February grids are the primary model here; if the textbook grids are not visible to all, draw a quick 7-column grid on the board for 2024 and 2025. Let Us Do Q4 (p.176) is a personal festival-month task that works well as take-home reflection.
0–8Open with Parv's story: a child whose birthday falls on 29 February. Ask students how often they think that birthday comes. Display the February 2024 and February 2025 calendar grids and invite students to count the days in each, leading into Let Us Do Q1, p.175 ("Notice the number of days in February in 2024 and 2025....")
8–18Students examine the two February grids, state their counts, and explain why one year has 29 days. Guide the class to define a leap year. Move to Let Us Do Q2, p.176 ("Fill in the blanks with consecutive leap years....") and Let Us Do Q3, p.176 ("How many days would a leap year have?...") — students fill blanks and share reasoning aloud.
18–32Shift attention to the days-of-the-week vocabulary. Students work on Let Us Do Q5, p.176 ("Answer questions by writing appropriate days: today, yesterday, tomorrow...."). Pairs compare answers; the class resolves any disagreements by anchoring to a chosen start-day on the calendar grid.
32–40Quick class discussion: what pattern governs when a leap year falls? Students say the rule in their own words. Briefly name the remaining calendar tasks — the months, festival names, date format, and elapsed time — to frame what the calendar grid can do.
Let Us Do Q2, p.176 — Fill in the blanks with consecutive leap years before and after 2024.
Which of the following years is a leap year?
- A 2022
- B 2023
- C 2024
- D 2025
C. 2024
What each wrong option reveals
- A The student may not know the four-year rule and is guessing, or thinks any even year is a leap year.
- B The student may think leap years occur more frequently or that odd years can be leap years.
- D The student may be off by one from the correct leap year, indicating an uncertain grip on the four-year sequence.
Also saved as 5 periods.
- 2Date Detectives: Format, Patterns and Elapsed Time
Lesson - 3Calendars All Around: Community Time and Festival Months
Lesson - 4A Day in 24 Hours: Circle Diagrams and Digital Clocks
Lesson - 5Milk Trips and Homework: Adding Minutes to Clock Times
Lesson - 6Half, Quarter and Three-Quarter Hours on the Clock
Lesson - 7Clock Relay: Consolidating Reading and Elapsed-Time Skills
Lesson - 8Time All Together: A Chapter-Wide Synthesis
Lesson
- 1. Shapes Around Us
- 2. Hide and Seek
- 3. Patterns Around Us
- 4. Thousands Around Us
- 5. Sharing and Measuring
- 6. Measuring Length
- 7. The Cleanest Village
- 8. Weigh It, Pour It
- 9. Equal Groups
- 10. Elephants, Tigers, and Leopards
- 11. Fun with Symmetry
- 12. Ticking Clocks and Turning Calendar
- 13. The Transport Museum
- 14. Data Handling
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