Great simple video to suggest to my tutorial students! I had to brush up on my Geometry this year. It’s been way too long (decades) since I’ve taught or taken basic Geometry! I’m hoping you have a video on rotations, too. And then multiple transformations performed on a single figure. The kind of problem where you have to work backwards and figure out which transformationS took place…those can be quite challenging!
Intro 0:10 Reflecting a shape on a grid 2:46 Reflecting in a diagonal line 4:09 Equations of vertical and horizontal lines 5:57 Reflecting in a line on a coordinate grid 7:36 Reflecting in the line y = x 9:24 Reflecting in the line y = -x 10:32 Describing reflections
Ask yourself: Has it changed size? - Enlargement Has it simply moved? (check with tracing paper) - Translation Has it been flipped over? (check with tracing paper) - Reflection Has it been turned around? (check with tracing paper) - Rotation
Thanksfor the vid. Do you have any tips tho for finding the centre of rotation using tracing paper, in p1 edexcel i spent ages trying to find the centre and still didn't find it by the end 😭😭
I am working on a rotation video but the good news is you probably won't be asked to do it again! I generally just try different points but it takes a bit of practice and intuition.
Helpful but only one question. What would happen if the shape which needs to be reflected touches the line(mirror)? Would the two shapes overlap? Thanks
00:03 - Understanding reflections in geometry using a mirror line. 01:51 - Reflecting shapes across various types of mirror lines. 03:26 - Understanding reflections in mathematics using coordinate systems. 05:15 - Understanding reflections in GCSE Maths equations. 06:48 - Reflecting shapes across vertical and diagonal lines. 08:23 - Reflecting points across the diagonal line Y = X. 09:50 - Understanding reflections in coordinate geometry. 11:17 - Understanding reflections in geometry through line equations.
I like doing the diagonal ones by moving the points diagonally towards the mirror line. It works just as well, and I think its easier to keep track of how many squares you have to move since you typically dont need to move the points that much
You can do this yes. In my experience though students are more likely to make a mistake doing this and work better moving horizontally and vertically. If you get the right answer though it doesn't matter :)
@@1stClassMaths Yeah, sometimes you have to deal with half sqaures and I can see why it might be confusing. Still, ive been using it since I took this topic, and thats what I feel most comfortable with. Good to know its still a valid method
I fully understand y=x in both quadrants but it does not make sense to me y=-x in the lower right quadrant, I see it as -y=x am I right in thinking this? thank you
Just googled it and it makes sense that y=-x also means -y=x...........All the points on the line 𝒚 = -𝒙 have coordinates with values for 𝒙 and 𝒚 that are equal in magnitude but with opposite signs.
Hi sir we're new for math we are not like you and we don't no how uknow think about boss pls and make pls to understand by little bit ineen talk to us slowly couse uare talking for very first pls boss thank you
bro is a life saver, exceptional explanation tysm
You voice is great teaching make me wanna focus🎉
Watch this video for my homework and still confused.
Same 😂
If u concentrate then u can
Well I'm getting it
BAHAHAHAH SO REAL. I have the same problem😭😭
Great simple video to suggest to my tutorial students! I had to brush up on my Geometry this year. It’s been way too long (decades) since I’ve taught or taken basic Geometry! I’m hoping you have a video on rotations, too. And then multiple transformations performed on a single figure. The kind of problem where you have to work backwards and figure out which transformationS took place…those can be quite challenging!
I am working on the other transformations don't worry!
Am pleased with your explanation
these videos are rlly helping me prep for tmrw’s exam! tysm ❤
Good luck!!
Intro
0:10 Reflecting a shape on a grid
2:46 Reflecting in a diagonal line
4:09 Equations of vertical and horizontal lines
5:57 Reflecting in a line on a coordinate grid
7:36 Reflecting in the line y = x
9:24 Reflecting in the line y = -x
10:32 Describing reflections
Great Teacher
bro thank u so much i finally get this because of you
Excellent so good to hear!
11:00 how can you tell which transformation is it? Can u tell a few signs to look for?
Ask yourself:
Has it changed size? - Enlargement
Has it simply moved? (check with tracing paper) - Translation
Has it been flipped over? (check with tracing paper) - Reflection
Has it been turned around? (check with tracing paper) - Rotation
@@1stClassMathsWhat if you don't have any tracing paper in exams
Thanksfor the vid. Do you have any tips tho for finding the centre of rotation using tracing paper, in p1 edexcel i spent ages trying to find the centre and still didn't find it by the end 😭😭
I am working on a rotation video but the good news is you probably won't be asked to do it again! I generally just try different points but it takes a bit of practice and intuition.
@@1stClassMaths ye thanks for all the work u do. ig i just was unlucky on the day
if i get a grade 9 pass its all because of u
Helpful but only one question. What would happen if the shape which needs to be reflected touches the line(mirror)? Would the two shapes overlap?
Thanks
00:03 - Understanding reflections in geometry using a mirror line.
01:51 - Reflecting shapes across various types of mirror lines.
03:26 - Understanding reflections in mathematics using coordinate systems.
05:15 - Understanding reflections in GCSE Maths equations.
06:48 - Reflecting shapes across vertical and diagonal lines.
08:23 - Reflecting points across the diagonal line Y = X.
09:50 - Understanding reflections in coordinate geometry.
11:17 - Understanding reflections in geometry through line equations.
There are chapters in the description?
@@1stClassMaths i know but this is summary for your ease
I like doing the diagonal ones by moving the points diagonally towards the mirror line. It works just as well, and I think its easier to keep track of how many squares you have to move since you typically dont need to move the points that much
You can do this yes. In my experience though students are more likely to make a mistake doing this and work better moving horizontally and vertically. If you get the right answer though it doesn't matter :)
@@1stClassMaths Yeah, sometimes you have to deal with half sqaures and I can see why it might be confusing. Still, ive been using it since I took this topic, and thats what I feel most comfortable with. Good to know its still a valid method
hi how can i make it when the y=x+8? thank you
thanks sir, could you do a video on ratio?
Love your videos, can you please make a video about gradients, derivatives and differentiation techniques. Thank you.
Thx for the help
I fully understand y=x in both quadrants but it does not make sense to me y=-x in the lower right quadrant, I see it as -y=x am I right in thinking this? thank you
Hi yes. y = -x is the same as -y = x
Just googled it and it makes sense that y=-x also means -y=x...........All the points on the line 𝒚 = -𝒙 have coordinates with values for 𝒙 and 𝒚 that are equal in magnitude but with opposite signs.
life saver my teacher does not explain well
This is nice
Please do a video on paper 3 higher predicted paper
I am working on it.
Line reflection along another line please
Owe you my life
And I really loved you're videos and how you want to make to understand and I love ifan you're english event two thank teecher & morning by
How many marks in total do you think would be a pass on foundation 🤔
The max you can get is a 5 or 6 😭
@@Sparklingwaterforlife 5
Hi sir we're new for math we are not like you and we don't no how uknow think about boss pls and make pls to understand by little bit ineen talk to us slowly couse uare talking for very first pls boss thank you
Hi how can i make it when y=x+8? thank you