Collecting Simple Data on Age and Height for Primary 1

Data Collection

Performance Objectives

By the end of the lesson, students should be able to:

1. collect data on their ages at home and school
2. collect data on their heights

What is Data?

Data is information or facts about things.

For example, your name is a piece of data. Your favourite colour is also data. The number of books in your bag is data.

What is Data Collection?

Data collection is finding and gathering information or facts.

When people collect data, they are trying to learn more about something. We can collect data about people, animals, or objects around us.

Collecting Data on Age

Age tells us how old a person is.

People can find out their age by asking their parents or by remembering their birthday. Knowing your age is a way of having data about yourself.

How to Collect Age Data

Collecting age data means finding out how old people are. In school, pupils can collect data about the ages of their classmates.

The procedure for collecting age data in class involves the following steps:

1. Ask each pupil, “How old are you?”
2. Listen carefully to their answer.
3. Write down the age on a small card or a piece of paper for each pupil. For example, if a pupil says “6 years old”, write “6” on a card.
4. After collecting all the ages, the cards can be grouped together. For example, put all the “5” cards in one pile and all the “6” cards in another pile.

This helps to see how many pupils are 5 years old, how many are 6 years old, and so on.

Collecting Data on Height

Height tells us how tall a person is.

People can measure height using a measuring tape or a wall rule. It is important to stand straight when measuring height to get a correct reading.

How to Collect Height Data

Collecting height data means finding out how tall people are. In school, pupils can collect data about the heights of their classmates.

The required materials are:

1. A wall rule or measuring tape
2. A pencil
3. A notebook or paper to record heights

The procedure for collecting height data in class involves the following steps:

1. Stand each pupil against a flat wall.
2. Ensure the pupil stands straight with their heels together and head looking forward.
3. Place the wall rule or measuring tape against the wall next to the pupil.
4. An adult should gently place a flat object (like a book) on the pupil’s head, making sure it is level.
5. Mark the point on the wall rule where the bottom of the book touches.
6. Read the measurement from the wall rule.
7. Write down the height for each pupil.
8. After collecting all the heights, pupils can be grouped who are similar in height. For example, group all pupils who are “100 cm tall” together.

Always ask an adult to help when measuring height to ensure it is done correctly and safely.

Grouping Data

After collecting data on ages or heights, pupils can be grouped.

Grouping helps to see how many pupils share the same age or are of similar height. It makes the collected data easier to understand.

Grouping by Age

To group pupils by age, all pupils who are 5 years old can stand together. Then, all pupils who are 6 years old can stand together, and so on.

This way, it is easy to see the number of pupils in each age group.

Grouping by Height

To group pupils by height, pupils who are tall can stand in one line and pupils who are shorter can stand in another line. If exact heights have been measured, pupils with similar measurements can be grouped together.

For example, all pupils who are 100 centimetres tall can stand together.