Transcript שקופית 1

Teacher Notes
Subject: Math
Topic: Geometry
Title: Angles
Grade(s): 5 and 6
Cross-curricular link(s): Nonspecific
Intended learning outcome(s)
· Students identify the parts and types of angles
· Students measure and create angles with specific measurements
· Students recognize angles in real-life objects
Recommended usage: There are two pictures in the "Attachments" section that I took around my school. You can add to those pictures or use you
own. I took pictures of teachers making angles with their arms and legs. "Teacher Says" is just a game that I use to review, you can delete the slide if
you do not want to play the game.
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Angles can be classified into four types:
Move to see answer.
Right
Acute
An angle measuring
less than 90
degrees.
An angle
measuring
exactly 90
degrees.
Move to see answer.
Move to see answer.
Straight
Obtuse
An angle measuring
more than 90
degrees.
Move to see answer.
An angle that
measures exactly
180 degrees.
Move to see answer.
Label the following angles...
Acute
Right
Obtuse
How do we measure angles?
Some things to notice:
* Line up the vertex to the
circle in the center of the
protractor.
* There are two sets of
numbers (moving opposite
directions). Either can be used.
* You can draw your own angle
using a protractor or you can
measure other angles.
Using a protractor.
Here are some angles to practice on.
Draw angles at the following degrees:
32
104
78
165
10
98
Find the angles in the pictures.
Now, measure the angles in these pictures of real items.
‫מצאו שלוש נקודות היוצרות זווית הכי קטנה שאפשר‬
‫פתרון‬
‫הוסיפו נקודה ירוקה על אחד הקדקודים ברשת‪ ,‬כך שאם מחברים אותה לשתי נקודות צהובות‬
‫מתקבלת זווית ישרה בקדקוד הירוק‬