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Why do they make Maths so hard? I blame Barry! He sits in an office and makes up lots of terms in Maths which all mean the same thing. The good news is ... I have the ability to channel Barry and undo all his craziness by making Maths more interesting! In this video, we look at the language used in Maths to talk about angles. For example, supplementary, complementary, reflex, revolution, acute, obtuse and so much more. Once we have looked at the language I look at lots of examples to explain how to use them. I even use some algebra! And to make things even more complete we look at how to use Bearings and Compasses. I think I even talk about how it should be Weetabix and not Weetbix! So much fun in so little time.
This video recaps all the work which was covered in Year 7 to enable the rest of the work at a Year 8 level to take place. It looks at angles in a triangle, classifying triangles by sides and angles as well as the exterior angles rule. There are lots of examples. The video concludes with a discussion of parallel lines and what I call FUZX. Most other people would call the angles: corresponding, alternate, opposite and co-interior.
This video looks at what a quadrilateral is! I know .. you have been doing this for years, but there is new learning to be had. What is a convex and non-convex quadrilateral? What are the different types of quadrilateral? What is the angle sum of a quadrilateral? All these questions (and more!) are answered in this video. There are lots of worked examples all explained in the simplest way.
Welcome to the world of missing parrots. I couldn't resist that really bad pun. In fact, this video is filled with them!!! If you're asking what I mean about missing parrots then ... Polly Gone. Get it? No ... don't worry! You're probably here for the Maths. Well, the good news is that I spend time looking at what a polygon is and how we can find the angle sum of any polygon. I do this by using one simple rule: Angles in a triangle add to 180 degrees. I look at a general rule and then spend time using some examples to show how to find the number of sides if I know the angle sum and how to find the angle sum if I know the number of sides. I look at convex and non-convex shapes and then onto the very exciting idea of interior and exterior angles. I don't think there could be any more fun had in one lesson. We also speak a little greek!
This video is another in the series of videos looking at the topic area of Geometric Reasoning. It's important in maths to know the difference between 2D and 3D shapes (otherwise known as solids). We take a look at particular types of solids called Polyhedron/Polyhedra and can relate faces, edges, and vertices together to form Euler's Rule. Examples are given of lots of solds and how they are used in Mathematics.
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These are the videos which are available in each chapter. You will notice that some are free and some are for subscribers only. Making and hosting these videos costs a little bit of money. To help pay for the hosting fees I have no choice but to hide some of the videos and make them for subscribers only.