Students are introduced to the geometric terms rectangle and square. While some students may be familiar with these terms, they are formally introduced in this lesson, and all students have an opportunity to use the terms when identifying shapes in the classroom. Students consider the relative lengths of the sides of rectangles and describe them as longer, shorter, or the same length.
In kindergarten, it is not important that students articulate the difference between squares and rectangles, only that they can identify examples of each shape. Refer to squares as “a special type of rectangle with 4 sides that are the same length,” but do not hold students responsible for the definition. In grade 1, students will distinguish between defining and non-defining attributes of shapes, which will allow them to discuss how squares and rectangles are the same and different.

Reflect on how comfortable your students are asking questions of you and of each other. What can you do to encourage students to ask questions?