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Teaching Grade 10 Euclidean Geometry

9/9/2014

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This is now the fourth webinar we've done on Euclidean Geometry and with every person, I see a little more of how fun and interesting the section can be.


Dylan came out from behind the buttons to tell us about one of his favourite sections, Euclidean Geometry. It was quite obvious to see his passion.
In the preparation conversations, Dylan kept emphasizing the importance of developing key skills. These are reason, generalise, conjecture, investigate, justify, prove and explain. All of these skills help with developing sound arguments, whether in Maths or other subjects, or even in future life.
We kept referring to previous conversations we'd had with Leigh. If you'd like to watch those again, go here for Grade 11 and here for Grade 12. We've also spoken to Jacques about teaching Grade 10.

Let's take a look at the information on Dylan's main slides.

3 Pressure Points:
  • You either got it or you ain’t
  • Problem solving skills take time to bake
  • Geometry is not algorithmic

5 Point Teaching Strategy:
  • Get all the basics in place (triangles and quads)
  • Work with theorems intuitively (measure, explore, discover, generalise)
  • Apply theorems to numeric problems
  • Apply theorems to abstract problems
  • Prove theorem formally

Good Ideas:
  • Geometry Toolbox
  • Group work
  • Slow burn
  • Make your own ryders

Here are some links that will help:
  • This website defines Euclidean Geometry.
  • This website explains the concepts parallel lines and pairs of angles.
  • This is a premier educational portal that provides students with resources on Mathematics from counting by using objects to multiplication.
  • This website looks at angles associated with parallel lines.
  • This website provides students with study guides which have explanation, example problems, and practice problems with solutions to help you learn triangles for geometry.
  • This is an all in one package on scalene triangles that defines scalene triangles and provides facts about them.
  • This website provides information on isosceles triangles.
  • This is a great website to get the basics on equilateral triangles.
  • This website gives a brief overview on theorems of triangles.
  • Refer to this website to learn more about when triangles are considered similar.
  • This website is a test and worksheet generator for Maths teachers.
  • This website defines when a triangle is considered congruent.
  • This is a test and worksheet generator for Maths teachers.
  • A chapter from Everything Maths textbook on the midpoint theorem.
  • A useful site to explore polygons.
  • Learn about all the different types of polygons on this site.
  • Learn more about squares on this site.
  • For everything there is to know about rhombus refer to this site.
  • Learn about convex kites here.
  • This website provides a fun and interactive way of learning about the concave kite.
  • This website provides an overview on rectangles.
  • Note on the properties of a trapezoid.
  • Test your knowledge on quadrilaterals on this website.
  • Here you will find a blank quadrilateral flow chart where you can take notes.
  • Mindset resources for Grade 10 Euclidean Geometry
  • Mindset resources for Grade 11 Euclidean Geometry
  • Mindset resources for Grade 12 Euclidean Geometry

Here are some cheat sheets you could use to help you:
  • https://drive.google.com/file/d/0B5rFw75W_FVJQmZNMDFRbnR4VDUwWWVXOHppMGhCaHVpYVlV/edit?usp=sharing
  • http://learn.mindset.co.za/sites/default/files/resourcelib/emshare-show-note-asset/2604fdocpdf
  • http://learn.mindset.co.za/sites/default/files/resourcelib/emshare-show-note-asset/2605fdocpdf
  • http://learn.mindset.co.za/sites/default/files/resourcelib/emshare-show-note-asset/2606fdocpdf

I feel like I've just skimmed the surface of what we spoke about. In order to get real value out of this, you should take the time to watch the webinar. The last half of it was dedicated to the differences between numeric and abstract problems and strategies to teach both.

Well, that's it for now. Until next time, happy teaching!
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    About Helen

    Helen says she has the best job in the world. Each week she gets to talk about teaching strategy with exciting guests and then she gets to write about the shows in this blog. #HappyMindsetter

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