412K views · 2.7K reactions | From survivingmsscience on IG: “Introduction to Inertia! This is a great activity for Newton’s 1st Law of Motion. You have to try it!✨ All you need are some index cards, string, and plastic cups. For a group of 4 students you will need 4 index cards and 5 cups. I got this idea from mrsnelsonsmiddles  Tip: use the hole punch reinforcement stickers to help your cards last year after year.” | Edutopia | Facebook