Lesson 71 Learning Objectives:
Construct skeletons of triangular, rectangular, trapezoidal, pentagonal, and hexagonal prisms
Name and sort prisms by the shapes of their bases
Construct triangular and rectangular prisms from nets
Sketch the faces of prisms
Practice:
Jump Math 4.2:
Pages 130-134
Reflect:
Reflect in your math journal. Draw, create or write to share your thinking. See Lesson guide 71 for more reflection questions, real life anchoring, playful explorations and creative invitations.
Why do you think prisms are named after their bases and not their sides? If you turned a prism upside down, would its name change?
If a prism has a pentagon as a base, how many faces does it have? How do you know?
Can two prisms have the same number of faces but different names? Why or why not?
Could two different nets be like two different “recipes” for the same prism?
What does the number of edges of the prism tell you about the space inside?
Math Talk:
Have a conversation about this image. Be curious. Be creative. Can you see in different ways?
This math talk tells a story. Before reading the story below, what do you see? What do you notice?
The Meadow
Three young green shapes were travelling along a forest path, wondering what they would become if only they could unfold themselves. They emerged from the forest and came to a meadow. There, they were welcomed by small maple tree that lost its leaves in a fall storm, one bright orange maple leaf was waving in the wind. With the sun shining brightly high in the sky, they also noticed a windmill and a bird flying south. The green shapes stood in awe, realizing that this meadow reflected themselves, unfolded. Which shape saw themselves in which part of the meadow scene? What happens next?
Designed in Polypad: 3D Solids, image and story by LM
