This simple book gives your child the opportunity to explore one more. You may also use this book to consolidate and develop your child's subsidising awareness and confidence. Discuss with your child what is one less or one more. One less means the number that comes before. One more means the number that comes after. Encourage your child to say how many? Encourage your child to look at the number line to determine which number they can see next on the number line to reinforce the language before, after and next. Have fun being the teacher and take turns asking and answering the questions.