Multiplication facts 4s — free complete family, no strings attached. Meet Duke the Dog, the four-legged star of the 4s. Every fact in this family has a character, a story, and a memory anchor so students remember the answer instead of counting on their fingers. This is the complete 4s Fact Fables family — not a preview, not a teaser. Everything a student needs to learn and practice the 4s facts from first exposure through cold drill is right here. Includes:Character cast page introducing Duke th