The Shapes Trilogy #1: Triangle
Author: Mac Barnett
Illustrator: Jon Klassen
Overview:
Capture your students’ curiosity with this clever and funny story about Triangle and his mischievous trick on his friend Square. This lesson helps young learners recognize and describe triangles while exploring themes of friendship, playfulness, and problem-solving. Through a read-aloud, shape hunt, and creative art activity, students connect geometry with storytelling and imagination. By the end of the lesson, they’ll not only identify triangles in the world around them but also understand that even playful tricks can teach valuable lessons about friendship and kindness.
Standard:
Math:
K.6A Identify two-dimensional shapes, including circles, triangles, rectangles, and squares.
K.6C Use attributes to describe two-dimensional shapes.
ELA:
K.5A Discuss the main ideas and details in texts.
K.5B Retell a main event from the story.
Fine Arts:
K.2A Express ideas through original artworks using a variety of media.