## Welcome to H3 Maths

Blog Support for Growing Mathematicians

### Maths Videos for Better Learning

June19

There are just so many instructional videos for Mathematics and they can really help you understand a topic you are learning at school. It is also a great way to hear a different voice than your own teacher’s every day! Head to YouTube or TeacherTube and type in the topic you are doing in maths and then try to find a video that is suitable. I tend to look for ones that have really cool graphics as they are often usually easier to follow. In an earlier post I also recommended the Khan Academy which also covers many other school subjects. Another good list of upper high and university maths videos can be found by clicking on this logo below. These videos are well done and run via YouTube but are free for schools to use:

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#### Post Support

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]