❤️ TPT PRODUCT DESCRIPTIONTeach chi‑square with confidence using this clear, student‑friendly AP Biology lesson designed to make one of the most confusing topics in genetics finally click. This resource breaks chi‑square down into simple, digestible steps with visuals, explanations, and fully worked examples that guide students from confusion to mastery. Perfect for AP Biology Unit 5 (Heredity), this slideshow walks students through exactly how chi‑square works, when to use it, how to calcul