The workbook "Cash-Smart Kids: Fundamental Money Skills Workbook" continues to practice to help students understand the basic concepts of currency, including identifying and differentiating between coins and bills. Students practice understanding the values of common coins like pennies, nickels, dimes, and quarters, as well as typical bills such as $1, $5, $10, and $20. Problems include counting money, making change, and understanding how to add and subtract different monetary values. Using real-life scenarios, like buying items and calculating total costs or change, helps solidify these concepts.