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I assume you have an Alocasia. If so, cut the stems down to right above where they emerge from the pot.

Plant the blunt or rounded end down, the tapered end up. It's a fun plant!

If you sprout your elephant ear bulbs indoors to get a jump on the season, the plant must be acclimated to outdoor conditions slowly. This is true of all plants taken outside. It takes about a week of slowly increasing the amount of time outdoors, starting in a shady spot and moving to progressively more sun and wind. If you are planting bulbs outside, hardening off isn't necessary.

Depending on if this is alocasia, or colocasia, this could be getting too much sun. I will include articles for both, so that you can begin to find out what happened to them.

Colocasia- https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/growing-elephant-ear-plants.htm

Alocasia- https://www.gardeningknowhow.com/houseplants/alocasia-plant/growing-african-mask-plant.htm

If elephant ear parts are ingested, the cause local irritation and swelling. The severity depends on how much was eaten and the size of the victim. Burning pain in the lining of the mouth and stomach may lead to diarrhea. If hands have touched torn leaves and then put to the eyes, irritation and burning may occur. It is considered less toxic than the common houseplant, dieffenbachia. https://medlineplus.gov/ency/article/002867.htm

One of my favorites!
This article will help you.
https://www.gardeningknowhow.com/ornamental/bulbs/elephant-ear/growing-elephant-ear-plants.htm