Make math magically spooky this October with the Haunted House Math Project! Perfect for grades 3–5, this engaging Halloween-themed activity helps students master addition and subtraction with regrouping (including whole numbers and money amounts) as they earn “pumpkins” to build their very own haunted house. Students solve differentiated math problems to earn currency, then spend their pumpkins on materials to design a haunted mansion using craft supplies—or even edible items for a fun, hand