Provide solid mathematical content and child-friendly ways to encourage further practice. Reinforce fluency of number facts and mental calculation strategies. Provide problem-solving activities.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.