I love incorporating holidays with learning and with this STEM challenge you can! With this product you get the teacher instructions, student instructions, and materials guide. It is very easy to do with the students and you can add a little twist to the "ghosts".
I had my students personalize their "ghosts" which meant they needed to name, give a back story to, and draw a face for their ghost. This in itself was entertaining, but the process of this challenge got them truly thinking and problem solving. Enjoy!