Her experiment overturned a law of physics — but she never got the Nobel Prize for it. Chien-Shiung Wu is one of the most important scientists of the 20th century, and one of the least known. This original nonfiction reading packet introduces her story to 2nd and 3rd graders with grade-appropriate text, rigorous questions, and a built-in conversation starter about fairness in science. ✅ WHAT'S INCLUDED • Vocabulary Preview — 3 key words (symmetric, experiment, theory) with student-friendly defin