The Common Core style of mathematics instruction, which puts an emphasis on problem solving and critical-thinking skills, can be difficult for parents raised on rote memorization to grasp. Though Mistretta’s parent-focused guide to K–8 mathematics doesn’t specifically mention Common Core, it’s hovering in the background as she outlines standard curriculum basics, presenting sample problems as well as activities parents can use to demonstrate the everyday uses and real-life applications of mathematics. Mistretta begins with the 'big ideas' that guide mathematics instruction, followed by chapters focusing on smaller groups of grade levels (K–2, 3–5, 6–8) that go into detail about specific topics taught in each grade. Each section includes sample classroom scenes, including a problem; the steps the teacher would use to guide the students toward a solution; and practical actions parents can take to reinforce what their children are learning. Parents who find their children’s math homework baffling will appreciate Mistretta’s clear explanations of what’s going on with this new way of teaching and learning—and they may find that it makes more sense than they thought.