The invaluable teaching aid you need to go with the boxed sets. Work with the whole class or a group, demonstrating partitioning and combining sets of objects in a familiar setting. * use the same four scenarios and objects as the boxed sets and a choice of new scenarios * use the sample lessons to get you started * introduce the language you want children to use in contexts they'll understand and enjoy * demonstrate the use of numerals to record the sets of objects * make speedy assessments of what children understand and know.