Lesson objective: Solve problems using skip counting and repeated addition.

This lesson provides an opportunity for students to apply their knowledge and understanding of arrays to a real-life situation. Students are asked to help a friend solve a problem by organizing oranges into arrays and using skip counting and repeated addition strategies.

Key Concept students will use:

Skills students will use:

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they make connections between equal groups of objects and arrays and the concept of adding equal addends.

Students engage in Mathematical Practice 3 (Reason abstractly and quantitatively) as they make connections between equal groups of objects and arrays along with the concept of adding equal addends.

**Key vocabulary: **

- arrange
- arrays
- columns
- efficient
- equal groups
- equation
- repeated addition
- rows
- skip counting
- strategy