Students will be able to name shapes according to their attributes.
- 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 Practice(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.
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.
- 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!