Right Angles
WWLT: -
- Clock angles and turns
- How a protractor works and using a protractor
- Identifying if an angle is bigger or smaller than a right angle
- Constructing angles
- Classifying and estimating angles
WILF:
- I think Clearly
- I am Responsible
- Clock angles and turns
- How a protractor works and using a protractor
- Identifying if an angle is bigger or smaller than a right angle
- Constructing angles
- Classifying and estimating angles
WILF:
- I think Clearly
- I am Responsible
Clock angles and turns
This clock has changed from 12:00 to 12:15. This is 1/4 of a turn, 90 ° which is a right angle.
What is the turn of this time:
What is the turn of this time:
Using a clock, calculate the turn of the following times. As extension, can you calculate the angle?
1) 2:00 - 2:30
2) 6:15 - 6:30
3) 1:45 - 2:30
4) Can you make your own?
1) 2:00 - 2:30
2) 6:15 - 6:30
3) 1:45 - 2:30
4) Can you make your own?
How a protractor works and using a protractor
What is the angle of these arcs?
Work on the back page of your Angles booklet to show your understanding of measuring angles.
identifying if an angle is bigger or
smaller than a right angle
Classify these following angles:
Constructing Angles
Practise creating the following angles:
a) 35 °
b) 90 °
c) 160 °
d) an angle less than 90 °
e) an angle greater than 90 °
f) an angle of your choice, make sure you classify it.
a) 35 °
b) 90 °
c) 160 °
d) an angle less than 90 °
e) an angle greater than 90 °
f) an angle of your choice, make sure you classify it.
Classifying angles and estimating
Consider the following things when estimating angles:
1. Is it more or less than 90 ° (a perfect corner?)
2. Is it closer to 90 °, the end of the protractor or in the middle?
1. Is it more or less than 90 ° (a perfect corner?)
2. Is it closer to 90 °, the end of the protractor or in the middle?