Back to: Mathematics Primary 2
HELLO CHILDREN, WELCOME BACK TO CLASS
SUBTOPIC: LENGTH
Length can be defined as the distance between two points. Length measures how long or short a distance or an object is.
Measuring Length with Natural Unit
In the olden days, length is measured using body parts. This can be called natural units. A unit of measurement is a chosen and acceptable standard for measuring a thing.
Natural units are:
- Hand Span: this is the distance between the tip of the thumb and the little finger.
Foot Span: the measurement taken by the foot by counting how many times the object covers your foot.
Arm Span:
Cubit: This is the length from the elbow to the tip of the finger.
Stride:
ACTIVITY
- Using any of the natural units mentioned above, measure the following
- i) one of the walls of your bedroom or classroom
- ii) Your reading or dining table
iii) Your notebook
Importance of Length and Measurement
- Measurement is important to scientists as it helps them to be accurate.
- Measurement is used by farmers, by engineers in construction, by tailors also so they can make fitting dresses.
- Bakers also measure right quantity of ingredient so that the cake or pie can come out fine.
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