### Lesson plan

# 2-D Shapes

#### Learning Objectives

Students will be able to name shapes according to their attributes.

The adjustment to the whole group lesson is a modification to differentiate for children who are English learners.

#### Introduction

*(3 minutes)*

- Display a triangle to the class, either by drawing it on the whiteboard or using an interactive whiteboard. Ask your students to call out the name of the shape.
- Discuss the shape attributes as a class. Great discussion questions include:
*How many sides does a triangle have? Are they straight or curved? How many corners does a triangle have?* - Point to each corner on the triangle. Explain to the class that a
**Corner**Is the place where two sides meet. - Count the sides of the triangle together. Explain that each
**Side**Is a line that connects to two corners. - Explain to the class that today they will learn how to describe the
**Attributes**, or characteristics, of a shape to describe it, instead of just using its name!

#### Explicit Instruction/Teacher modeling

*(7 minutes)*

- Explain to the students that shapes are made up of straight or curved lines.
- Draw a circle on the whiteboard. Ask the students to think about how many sides and corners the circle has.
- After some discussion, tell the class that a circle doesn't have any sides or corners. Invite students to find objects around the room that resemble the same shape as a circle (e.g. pencil holders, cups, etc.).
- Draw and label a rectangle and pentagon on the board.
- Point to the rectangle and demonstrate how to count the corners and sides. Ask students to think-pair-share what they notice about the number of corners and sides they found.
- Allow a few students to share out, and explain to the students that the number of corners and sides are the same.
- Repeat the same process with the pentagon.

#### Guided practise

*(10 minutes)*

- Give each student the following pattern blocks: triangle, trapezoid, hexagon, and square.
- Ask students to hold up the correct pattern block as you call out the number of corners and sides a shape has. As you call out numbers, remind students that the number of corners and sides a shape has is the same number.

#### Independent working time

*(10 minutes)*

- Pass out a copy of the 2-Dimensional Shapes worksheet to each student.
- Have students complete the sheet on their own.

#### Differentiation

**Enrichment:**Challenge advanced students to draw and label more advanced shapes, such as hexagons, heptagons, octagons, and decagons. Instruct them write a riddle for each shape name on a sheet of paper, which includes the correct number of corners and sides the shape has.

**Support:**Encourage struggling students to use pattern blocks to trace the triangle, hexagon, and trapezoid. Ask them to count the number of sides and to write the number beside the drawing.

#### Assessment

*(5 minutes)*

- Pass out a sheet of drawing paper to each student. Instruct your students to draw and label a pentagon on the paper.
- Remind students that they should count and label the sides and corners on the paper as well.

#### Review and closing

*(5 minutes)*

- Have students work with a partner to find objects around the classroom that have varying amounts of corners and sides. You can also ask students to find objects with curved or straight sides.
- Make a list of all the objects or take pictures of the objects and refer to them during your next lesson on shape attributes!