Measuring Angles in 4th Grade GoMath

In this video tutorial, the teacher introduces fourth-grade students to measuring angles using a protractor. The lesson covers the parts of a protractor, how to align it with angles, and the difference between inside and outside number sets. The teacher provides examples of measuring both acute and obtuse angles, emphasizing the importance of choosing the correct number set based on the angle's orientation. The tutorial concludes with instructions for assignments and a brief review of the day's lesson.

What lesson was skipped in the video?

• Lesson 2

• Lesson 3

• Lesson 4

• Lesson 1

What tool is used to measure angles?

• Protractor

• Compass

• Ruler

• Caliper

How many degrees does a straight angle measure?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

What should be aligned with the vertex of the angle when using a protractor?

• The center hole

• The 90-degree mark

• The 180-degree line

• The 0-degree mark

Which type of angle is greater than 90 degrees but less than 180 degrees?

• Right

• Straight

• Obtuse

• Acute

If an angle opens to the left, which set of numbers on the protractor should be used?

• Both sets

• Inner numbers

• Neither set

• Outer numbers

What is the degree measure of an obtuse angle demonstrated in the video?

• 124 degrees

• 90 degrees

• 38 degrees

• 146 degrees

What type of angle is less than 90 degrees?

• Straight

• Right

• Acute

• Obtuse

Which set of numbers should be used if an angle opens to the right?

• Neither set

• Both sets

• Outer numbers

• Inner numbers

What upcoming events are mentioned at the end of the video?

• Review sessions

• A holiday

• A test

• A field trip