Math is my DD12's favorite subject. Though we, as parents, both have solid STEM background, she works through AoPS pre-algebra and algebra with very few intervention from us. She also attends local math circle since last year. Now, she is thinking about attending the coming AMC8 and AMC10. For AMC10, we are not sure she is ready because she has only learned some middle school Geometry through an online math camp this summer.
How can we support/advise her? Suggest to work directly on previous contest problems, or take some crash courses?! Compared to the systematic learning based on a curriculum, we wonder if this will make the knowledge fragmented and is not a way to build solid foundation?! Kind of a distraction?! Or, it's better to accelerate/enrich math background first and have a longer-term plan?!
We appreciate if you can share your experience and offer some suggestions. Thank you!