310K views · 102 reactions | Christmas Tree Cup Stacking STEM Challenge  ages 3+  My boys love any cup stacking challenge so I pulled together this one with a holiday twist! All you need is an empty tp roll, a rectangular piece of cardboard, green & red plastic cups and food pouch lids. So fun and an excellent STEM activity! More winter/holiday activities >> https://www.raisingdragons.com/category/seasonal/holiday-winter/ | Raising Dragons - Activities For Kids | Facebook