Less Than Zero by Stuart J. Murphy is a wonderful math story of Perry the penguin who wants to buy an ice scooter but does not have enough clams to do so. In this story, clams are used as a form of currency that is equivalent to our dollar bills. While saving up for his scooter, Perry keeps track of how many clams he has on a graph. The story Less Than Zero will teach your child how to graph and use money. When Perry first learns to use clams, he spends all of them and has to borrow clams from friends. He soon realizes that borrowing money from other people only increases his debt, hence the title less than zero clams, and he will need to earn more clams to get to his goal of buying an ice scooter. Eventually, Perry finds a job and saves up enough clams to get his ice scooter. Perry’s persistence will teach your child that they are able to save up money to purchase items that they really want. If they want something badly enough, they will find ways to control their impulse to spend money on items they want simply because they are available. As your child follows Perry’s graph, they might even be inspired to make their own.
A great way for you and your child to spend time together while doing math is by taking your child to Palo Alto’s ice skating rink! Use the same techniques Perry used with your child. Give your Palo Alto child a currency that he or she would need to convert to dollars. Your child will not only have fun reenacting Perry’s dilemma, but he or she will also get to practice their math skills. Less Than Zero will teach your child valuable skills and I definitely recommend this book to all young children in the Palo Alto-Menlo Park area.