How to Use a Protractor to Measure an Angle | Measuring Angles | Math with Mr. J
From Math with Mr. J
5 min2nd3rdMath
Summary
How to measure length with a ruler -- lining up at zero and reading to the nearest inch, half inch, or quarter inch. Mr. J shows how to read the marks.
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All ages
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Teaching resources
Discussion questions
A ruler measures length in units; read carefully to the nearest mark.
- Where do you line up an object to start measuring?
- What does each small mark on the ruler stand for?
- How do you measure to the nearest quarter inch?
Quick work-a-long
Words to know: ruler, length, inch, nearest
- Measure a pencil to the nearest half inch.
- Measure a book and compare it to another object.