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Introduction to Measurement

Measurement is the process of finding out how long, wide, tall, or heavy something is. We can measure objects using different units. Some of these units are non-standard units, which means they can vary in size.

Non-Uniform Non-Standard Units

Non-uniform non-standard units are units that can change based on who is measuring.
Let's see some examples:

Hand Span

  • Lisa measures her math textbook using her hand span.
  • She finds that the length of her textbook is 2 hand spans.
  • If someone else measures the same textbook, they might get a different number because their hand span could be bigger or smaller than Lisa's.
  • This shows that hand span is a non-uniform non-standard unit of measurement.

Foot

  • Lisa measures the length of her classroom using her foot.
  • She counts 20 feet from one end of the classroom to the other.
  • If another person measures the classroom, they might get a different number because their feet could be bigger or smaller than Lisa's.
  • This means foot is also a non-uniform non-standard unit of measurement.

Measures | Year 2 Mathematics (Cambridge)

Question for Measures
Try yourself:
Which of the following is an example of a non-uniform non-standard unit of measurement?
View Solution

Uniform Non-Standard Units

Uniform non-standard units are units that stay the same no matter who is measuring.
Let's look at some examples:

Paper Clips

  • The length of a book is measured using paper clips.
  • The book is 15 paper clips long.
  • Anyone using the same type of paper clips will get the same measurement.
  • This makes paper clips a uniform non-standard unit of measurement.

Straws

  • The breadth of a blackboard is measured using straws.
  • The blackboard is 4 straws wide.
  • Anyone using the same type of straws will get the same measurement.
  • This makes straws a uniform non-standard unit of measurement.

Conclusion

Non-standard units of measurement can be either non-uniform or uniform. Non-uniform units like hand spans and feet can vary depending on the person measuring. Uniform units like paper clips and straws remain the same, providing consistent measurements for everyone using them. Understanding the difference helps us choose the right method for accurate measurement.

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FAQs on Measures - Year 2 Mathematics (Cambridge)

1. What are non-uniform non-standard units of measurement?
Ans. Non-uniform non-standard units of measurement are units that are not consistent in size or value, and are not officially recognized for measurement purposes. Examples include using a pencil length or a footstep as a unit of measurement.
2. How do uniform non-standard units differ from non-uniform non-standard units?
Ans. Uniform non-standard units are consistent in size or value, but are not officially recognized for measurement. Examples include using a paperclip or a rubber band as a unit of measurement. Non-uniform non-standard units, on the other hand, are not consistent in size or value.
3. Why do UK schools provide lessons on non-standard units of measurement?
Ans. UK schools provide lessons on non-standard units of measurement to help students understand the concept of measurement using everyday objects and to develop their understanding of size and quantity.
4. Can non-standard units of measurement be used in real-life situations?
Ans. Yes, non-standard units of measurement can be used in real-life situations, especially when precise measurements are not required. For example, measuring the height of a tree using footsteps or the length of a table using pencils.
5. How can students benefit from learning about non-uniform non-standard units of measurement?
Ans. Students can benefit from learning about non-uniform non-standard units of measurement by developing their critical thinking skills, understanding the concept of measurement, and applying it to real-life situations.
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