This video illustrates the use of manipulatives to help students practice identifying quantities that are more or less and introduces symbols and mathematics terms to describe more and less. When numbers are represented with manipulatives as sets, students develop a concrete understanding for comparing quantities using the terms more and less. Students also benefit from multiple opportunities to talk about mathematics and use appropriate mathematics vocabulary such as "greater than" and "less than." Students must possess a deep understanding of number relation skills prior to mastering higher-level skills such as number operations.