Geometry Intensive Monday 8/5

8:30-8:45

Collect Assignment 1

Opener - polydron triangles on table
Ongoing: vocabulary on white board

Polydron triangles

8:45-9:45

Straw Tetrahedra
  • Build straw tetrahedra in groups.
  • Discuss terminology and possible math questions..
  • Build level 2 tetrahedra.
  • Discuss edge length, surface area and volume.
  • Determine hole shape (octahedron) and volume. [One table measured granola!]
  • Some built tetrahedron with side 3.
  • Shearing explanation of 1/4 octahedron volume.
  • Visualization of octahedron two ways and tetrahedron two ways.
  • Connection with dilation.

Straws

Ribbon

Prepared Straw tetrahedra, especially 1/4 of octahedron

Handout from NWMI

9:45-10:00

Break

 

10:00-11:30

Discuss tetrahedron and teaching

Rubber band drawing from CMP S&S Investigation 1.

Graph paper scaling of triangle inspired by CMP S&S Investigation 2.

Rubber bands, pencils, tape

Xerox of sheet from CMP Investigation 1

Graph paper

Calculators (?)

11:40-12:45

Lunch

 

12:45-1:50

In groups: each group works through student activities in CMP S&S. Answer questions in activity.

Stretching and Shrinking Book
Instruction handout

1:50-2:10

Video on similarity - first part Videotape
2:10-2:50

In groups, answer homework questions about Investigation.

Question handout
2:50-3:05 Announcements from Jim, CMP tips from Art, Announcements from Sally Assignment 2 handout
Assignment 1 feedback form

Overnight Assignment

Read Teacher Material in S&S
Assignment 2