Help with Folding, TFE, and Angles?

[squigloo]

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So my test is next friday, and I'm only scoring ~18 on my CDP tests 🙁

I usually get 93 - 100% on cubes, keyholes, and hole punching, but the other sections are pretty terrible. On my last test, I got a 33% on angles (66 on the one before that, lol), 40% on pattern folding, and 66% on TFE. Do any of you have any useful strategies to try out for any of those 3 sections? Thanks!

 

[denttal]

Do you run out of time on pattern folding or you aren't able to figure them out?

 

[squigloo]

Do you run out of time on pattern folding or you aren't able to figure them out?

I can't really figure them out. I usually skip tfe and save it for last, do the other 4 sections quickly, try and work through the pattern folding, and go back to tfe.

For pattern folding, I try and look for a certain part of the 3d structure and compare its adjacent parts to the 2d structure. Clearly, it isn't really working for me. I just have no idea how to visualize the 3d structure.

 

[denttal]

I actually am in a similar boat right now. I find TFE to be the most time consuming, so I save it for last. I am getting better at pattern folding. Here is what I do and maybe it will help:

1) I eliminate any obvious choices that have a side that doesn't even exist in the unfolded image.
2) I compare my answer choices to the unfolded image, looking for an identical "reference side". The easiest ones to look at first, are when a "reference" side shown in the folded answer choice only has one identical side in the unfolded image. Now I can kind of look to either side of the "reference side" and see if the orientations of the adjacent sides are possible.
3) If I haven't come to my answer choice yet, by either process of elimination or finding a folded image that is possible, I then need to pick a reference side on the folded image that could correspond to 2 sides in the unfolded image. I check to see if this folded image is possible given that the reference side could be either of the 2 corresponding sides.

Let me know if that makes sense!