Dear Parents, Next week's angles lessons will practise ... 1 - Angles o… · be available and an alternative lesson will be provided instead of drawing angles. WE WILL REVIEW MEASURING
Post on 14-Jul-2020
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Dear Parents,
Next week's angles lessons will practise measuring and
drawing angles. If you have a protractor a home, please find it
this week and have it ready to complete your tasks.
If you do not have a protractor, online measuring activities will
be available and an alternative lesson will be provided instead
of drawing angles.
WE WILL REVIEW MEASURING AND DRAWING ANGLES
WHEN WE RETURN SCHOOL SO PLEASE DO NOT GO
OUT AND BUY A PROTRACTOR ESPECIALLY FOR THESE
LESSONS.
Thank you,
The Year 5 team
10=
4
10=
9
10=
25
4=
=
=
Challenge - order from largest to smallest
40
100=
=
=
100
100
32
2
0.4
0.4
0.02
40%
32%
2%
=
=
=
5
0.440%=
0.5 = 50%
0.9 90%=25
25
0.16
12
24
0.48
0.96
16%
48%
96%
=
=
=
48%
100
2
9
10 25
240.4
0.96
Starter Convert into a decimal and a percentage
10=
4
10=
9
10=
25
4=
=
=
Challenge - order from largest to smallest
40
100=
=
=
100
100
32
2
0.4
0.4
0.02
40%
32%
2%
=
=
=
5
0.4 40%=
0.5 = 50%
0.9 90%=25
25
0.16
12
24
0.48
0.96
16%
48%
96%
=
=
=
48% 100
29
1025
24
0.40.96
Starter Answers
LO: to calculate missing angles on a
straight line
In order to answers these types of calculation, we will have to
recap one key skill and practise one key skill.
Key skill 1:to recap the
number of degrees on a
straight line
Key skill 2 - to use given
information to find a
missing angle
In order to answer this question, we first need to know the size of an angle
along a straight line
What do you think the
size of the angle is?
How could you prove
this without using a
protractor?
Half of 360 = 180
An angle aross a straight line = 180
In order to answer this question, we first need to know the size of an angle
along a straight line
What do you think the
size of the angle is?
How could you prove
this without using a
protractor?
Half of 360
= 180
An angle aross a straight line = 180
Watch Me
Key skill 1:to recap the number of
degrees on a straight line
How many degrees in a right
angle?
How many degrees in 2 right
angles?
Watch Me
Key skill 1:to recap the number of
degrees on a straight line
How many degrees in a right
angle?
How many degrees in 2 right
angles?
90
180
(2 x 90 = 180 )
Watch Me
Key skill 1:to recap the number of
degrees on a straight line
Straight line
How many degrees in a
straight line?
Watch Me
Key skill 1:to recap the number of
degrees on a straight line
Straight line
There are 180 degrees
in a straight line.90 90
Key skill 1:to recap the number of
degrees on a straight line
Complete the worksheet
Key skill 1:to recap the number of
degrees on a straight line
Complete the worksheet
90
180
180
Watch Me
Key skill 2 - to use given information to find
a missing angle
The size of our straight
line angle is 180
We can subtract the
known angle from 180 .
Working out:
How can we find this
missing angle without
measuring it with a
protractor?
1 8 0
1 3 5-
17
4 5
Our missing angle is worth 45 . .
Key skill 2 - to use given information to find
a missing angle
What will we need to do first?
What will our calculation be?
Key skill 2 - to use given information to find
a missing angle
We must remember that the
number of degrees on a
straight line is 180 .
Next, we need to subtract the
given angle from 180.
1 8 0
1 3 2-
17
84
The missing
angle is worth 48
Key skill 2 - to use given information to find
a missing angle
- 3 81 8 0
- 1 2 71 8 0
7 1
4 2
17
5 3
Key skill 2 - to use given information to find
a missing angle
- 3 81 8 0
- 1 2 71 8 0
7 1
1 4 2
17
5 3
142 53
Fluenc
y
Reasoning/Problem
Solving
LO: to calculate missing angles on a straight line
Complete bronze and silver and then look at the moving our learning on slide.
Moving our learning on:
In my opinion I believe
that
This time, you will need to add
all of the given amounts first
and then subtract from 180
degrees.
Fluenc
y
Reasoning/Problem
Solving
LO: to calculate missing angles on a straight line
When you are ready, please mark your answers.
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