Scientific Thinking Skills Task Cards | Observation Inference Variables | Grades 4-8 | NGSSAre your students constantly confusing observations with inferences? Do you spend half a lesson re-explaining what a variable is — only to watch them blank out on the quiz? You are not alone. This ready-to-go task card set gives EVERY student — from your most struggling reader to your most advanced scientist — exactly the scaffold they need to finally master scientific thinking skills. No more one-size-fit