Singapore Math's *Primary Math, US Edition *series features the Concrete> Pictorial> Abstract approach. Students begin by learning through concrete and pictorial means before moving into abstract thought and development, which encourages an active thinking process, communication of mathematical ideas and problem solving. Lessons are designed for a mix of teacher instruction and independent work, and students are encouraged to discuss ideas and explore additional problem-solving methods.

Primary Math Book 2A teaches numbers, comparing, and place value to 100, addition and subtraction with/without renaming, measuring length in meters, centimeters, yards, feet and inches, measuring weight in kilograms, grams, pounds, ounces, multiplication and dividing by 2 and 3.