@@@ Angle or Circular Measurement @@@
Angle Measurement
is a fundamental skill that all students should
to be proficient at
as well as not only measuring a given angle but constructing angles from a Protractor.
The image provided
below is a common protractor found in many
elementary, middle and
high schools. It is used in elementary as well as advanced
geometry angular measurement.
Students should be
given plenty of time to experiment and collaborate with fellow classmates
when learning how
to use a protractor to measure provided angles and drawing required angles.
There are four
basic angle types in Plane Euclidean Geometry:
Acute = (00 < 900)
Right = 900 Obtuse=
( 900 < 1800) Straight = 1800
It is confusing
when the angles appear in the opposite
direction.
Student need practice with angles in all directions both upright and up side down.
Practice is needed
with individual angles as well as angle within and outside of shapes.
After
reviewing these ideas and images, how about a: è * Play
the Measure Angle Game *
Remember the bottom
of an angle goes on the line just above the bottom of the
Protractor.
The litte white hole at the bottom middle of the
Protractor is placed on the vertex of the Angle.
Also, Teaching and
Learning Protractor Skills in a WWW environment
is a 21st Century Skill.
