Week 5- Measurement

Question 1

The concept of measurement?

Answer 1

Measurement is the process of assigning an attribute to an object to measure

Question 2

When we measure, we?

Answer 2

Determine the attribute

Select the appropriate unit to measure

Counting the units involved

Expressing those units as a numerical value

Question 3

Measurement principles

Answer 3

The unit must not be changed

No gaps or overlaps

Inverse relationship

Question 4

Estimation

Answer 4

Determine the number that is precise enough to be useful

Question 5

Tolerance of error

Answer 5

Refers to the exactness of the measurement needed - does not need to be perfect but depends on context

Question 6

Choosing appropriate units

Answer 6

Decide weather informal or formal

Decide how accurate it needs to be

Question 7

What is length?

Answer 7

Related to direction and line, a measure between two points on a single plane

Question 8

Circumference of a circle important things to know

Answer 8

Circumference, diameter and radius

Ratio between the three

3.14 is appropriate for primary school

Expressed by pi