Students explore the use of variables as they solve for the weights of objects using information presented in pictures.
Students work with subtraction at the intuitive level as they explore number families and ways to decompose numbers to 10.
This lesson encourages the students to explore another meaning for operations of subtraction, the balance.
In this lesson, students model subtraction with connecting cubes while the teacher reads to them from counting books.
A children’s book sets the stage for this lesson which encourages students to review counting back. In this lesson, children write subtraction problems and model them with cubes. They compare sets and record differences in the form of a table. The additive identity is reviewed in the context of comparing equal sets.