Class 4 Maths - ODISHA
Ticking Clocks and Turning Calendar
The chapter Ticking Clocks and Turning Calendar in Mathematics for Class 4 Odisha BSE students introduces children to the fascinating world of time and date measurement. Students learn to read both analog and digital clocks, understand the relationship between seconds, minutes, hours, days, weeks, months, and years, and solve practical word problems involving time intervals. This chapter is vital for board exams as it tests basic life skills and mathematical reasoning, frequently featuring in both objective and short-answer questions. Mastering this helps students manage time effectively and builds a strong foundation for future mathematical concepts.
Start Learning FreeKey Concepts
Reading the Clock
A clock has a short hour hand and a long minute hand. When the minute hand moves from one number to the next, it counts 5 minutes.
AM and PM
AM stands for Ante Meridiem, used for time from midnight to just before noon. PM stands for Post Meridiem, used from noon to just before midnight.
Units of Time
Time is measured in seconds, minutes, and hours, where 60 seconds make a minute and 60 minutes make an hour.
The Calendar
A year has 12 months and 365 days (366 days in a leap year). February usually has 28 days, but 29 days during a leap year.
Time Conversion
Converting larger units to smaller units involves multiplication (e.g., hours to minutes by multiplying by 60), while smaller to larger involves division.
Important Formulas
Board Exam Info
In the Odisha BSE Class 4 Mathematics examinations, this chapter typically carries around 6 to 8 marks. Common question types include reading clock faces, converting hours to minutes, calculating days between dates, and solving simple word problems about daily schedules.
Frequently Asked Questions
How do I convert hours into minutes?
To convert hours into minutes, multiply the number of hours by 60 because 1 hour is equal to 60 minutes.
What is a leap year and how often does it come?
A leap year has 366 days instead of 365, with February having 29 days. It comes once every 4 years.
When do we use AM and when do we use PM?
We use AM for morning hours starting from 12 midnight up to 11:59 in the morning. We use PM for afternoon and night hours starting from 12 noon up to 11:59 at night.
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