Christina Yingling-Smith ELBERT-PALMER ELEMENTARY SCHOOL, WILMINGTON, DE
Kindergarten Math : Unit #4 - Positions and Shapes : Lesson #12

# What is a Square?

Objective: Students will be able to name and describe the attributes of a square.
Standards: K.G.A.2 K.G.B.4 MP4 MP7
Subject(s): Math
60 minutes
1 Problem of the Day - 5 minutes

I start the lesson with a problem of the day to help students review skills and concepts from prior lessons and develop their ability to problem solve.  I call the students up to the carpet. The students find their spots while saying this chant with me.

Criss cross, applesauce, hands in your lap, eyes on the teacher, you've got to show me that.

I project the Problem of the Day on the SMART Board and say to students, "This is our Problem of the Day for today.  This says 'Name this shape.  Circle the shapes that match. Find additional examples in the classroom.'  This Problem of the Day has several parts.  What do we need to do first?"  (Name the shape).  "What is this shape?"  (A circle).  "What do we need to do next?"  (Circle the shapes that match).  I call up students to circle the circles.  "What is the last thing we need to do?"  (Find additional examples in the classroom).  I call several students to point out examples of circles in our classroom.

I tell students, "Today we are going to continue learning about shapes.  We are going to read a fun story and learn about squares!"

2 Presentation of Lesson - 25 minutes

I show students the book There's a Square by Mary Serfozo.  I tell students that in this story,  we will hear about a lot of shapes.  We are going to pay extra close attention to the section of the story about the square.  I read the story aloud.  When finished, I pull up this PowerPoint presentation from TeacherspayTeachers.com.  I show the second slide and ask, "What shape is this?"  (Square)  I trace over one of the sides.  "This is a side.  Each straight line that makes up a shape is called a side.  How many sides does a square have?"  (4)  I point to a corner.  "The place where two sides meet is called a corner.  How many corners does a square have?" (4)  A corner can also be called a vertex.  I sing the Square Song.  I have the students sing with me the second time.  "What else did the song tell us about squares?"  (All the sides are the same).

Corners/Vertices
Standards Alignment

Common Core Standard K.G.4 says "Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and vertices/“corners”) and other attributes (e.g., having sides of equal length)"

It refers to the places where two sides meet as vertices/corners.  I start off introducing the term corners, but during this lesson I also introduce the word vertices or vertex as the singular form.  From this point on I continue to use both terms together.  For example, "A square has 4 corners or vertices."  I do this for a few lessons and then start to use the two terms interchangeably.  This can seem difficult for students to begin with, but as they continue to hear the terms, they will also begin to use both.

3 Practice - 20 minutes

Since the students finish their papers at different times, I circulate through the room to make sure that students are completing their papers, putting it in the tray and getting their centers.  This week's centers are:

Shape Monster Book (Hubbardscupboard.org)
My Shape Flip Book (KindergartenCrayons.blogspot.com)
Building Shapes (Teacher Made Resource, craft sticks, fruit loops, noodles and drinking straws )
Shapes - Lakeshore Instant Learning Center
Shapes Adventures SMART Board
- Lakeshore Interactive Activity

I quickly circulate to make sure students are engaged and do not have any questions about how to complete the centers.   I pull three groups during centers.  I pull the first group for 10 minutes and the other two groups for 5 minutes each.  The first group is comprised of the students who were having trouble identifying numbers and matching the numbers to objects.  Even though we are working on shapes, I start with identifying and matching numbers to objects for this group since they need to master this skill.  I have a basic idea of who I want in each group based on recent assessments, but I also take into account how the students did in the whole group lesson.  I pull the students back to my small group table to do a reteach activity using flash cards and manipulatives (for this lesson I used two color counters).  I show the flash cards and have students practice identifying the numbers.  I then give each student a pile of counters (1-10) and have them pick the number card that matches their group.  I then put some attribute blocks on the table and have each student choose a square.  I have the students run their finger along the side as we say side and count the four sides.  I have the students touch a corner as we say corner and count the four corners.  The next two groups of students do just the activity with squares.  I do this much quicker for these groups.  Prior to clean up, I check in with each table to see how the centers are going.  I turn on Tidy Up by Dr. Jean.  Students clean up and return to their seats.

4 Closing - 5 minutes

I close the lesson by having a student come to the board and draw a square.  I ask, "What shape is this?"  (A square)  "How many sides does it have?"  (4)   "How many corners or vertices does it have?"  (4 "What is special about a square?"  (All of the sides are the same length).  I mention positive things that I noticed during centers.  I also include something that needs to be better next time.  I review what we did during our whole group lesson.  "Today we learned about squares.  squares are two-dimensional shapes with 4 corners and 4 sides that are all the same length.  Tomorrow, we are going to learn about another two-dimensional shape!"