Write in the order in which these were invented.

Computer mouse:$1963$

Light bulb:$1860$

Airplane:$1903$

Safety pin:$1849$

Television:$1926$

Introduction to Events and Parts of a day, such as Sunrise-Sunset and Morning-Afternoon-Evening.

2. Estimation of Time with respect to activities:

Activities completed in seconds, minutes, hours, days, months and years.

3. Birth Certificate:

A Birth Certificate is an official document issued to record a persons birth and identify them by name, place, date of birth, and parentage.

4. Introduction to Calendar:

(i) A calendar is a chart or series of pages showing the days, weeks, and months of a particular year, or giving particular seasonal information.

(ii) One calendar common year has $365$ days, $12$ months.

5. Leap Year:

One calendar leap year has $366$ days: Leap year occures every $4$ years.

6. Addition:

(i) Putting together two or more numbers is called addition. the answer of addition is called the sum.

(ii) The numbers being added are called addends.

(iii) A carry is a digit that is transferred from one column of digits to another column of more significant digits.

7. Introduction to Clock:

(i) The short hand is called the hour-hand. The long hand is called the minute-hand.

(ii) The hour-hand shows the hour. The minute-hand shows the minute.

8.  Festivals and Order as per Date:

Identifying a festival that comes before or after other festivals according to the calendar.

9. Timeline:

A timeline is a list of important events displayed in the order in which they happened.

10.  Activities Completed in Days:

Identifying the activities which can be completed in a day, and also identifying the time taken to complete the activity.