When you say orientation phase, I'm assuming it has the same equivalence as the "hook" to a lesson. Two ways of going about it as far as I know. One is to introduce vocabulary words since geometry is ever so technical. Another is by giving them a fact so what I would do is open the discussion to students that angles inside a triangle add to 180 degs. Better yet, use both ideas. And then find angle patterns with a transversal drawn. And if students are developmentally ready, find a way to prove why angles in a triangle add to 180 using a couple of transversal a with a common vertex drawn in a pair of parallel lines. Happy teaching.
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I don't know if it's connected to what you want to know but because geometry depends so much on visuals, you might open the discussion to how operators use thei driving skills to parallel park. That makes for a good real-life problem. How do operators know that they did the parallel parking right? You should get a lot of input if the kids you teach are in the driving age and that may be a way to get their attention?
what could be an activity and also
specification of learning material for this activity in this "hook" phase yes, getting their attention.
Also examples and non examples for the sorting phase
Check out this video too
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