Creating a strong math foundation, Calvert 1st Grade Math is a fun program with a focus on the basics of elementary math. Ten colorful workbooks provide instruction and practice in number order, number words to 200, place value, addition, subtraction, time, fractions, and more. In this homeschooling math program, students focus on mastery of a single skill before moving to learn new skills. This approach builds a strong foundation in basic math skills which paves the way for ever-increasing levels of proficiency. Skip counting, measurements, shapes, number sentences, and money also are studied.