DEEP THINKING AND REAL FUN WITH VERTICES, EDGES, AND FACES

Tracy Manousaridis, Shelle Crandell, Samantha Lowe and Kate Coleman

Add pic of students with polyhedra

Headline Stories

The answer is “only C.” What could the question be?

A B C D

A three-dimensional figure has 6 rectangular faces. Two edges are 1 inch long, two are 2 inches long, and one is 3 inches long. What can you figure out without measuring anything else?

What CAN we do with 3-dimensional figures?

Playing “Guess My Shape”

Composing and naming new figures

Constructing Figures

Predict what 3-dimensional figure your net will fold into.

Fold on the dotted lines and tape your figure together.

Were you surprised by your results?

How many faces? How many edges? How many vertices?

Work in your group to fill-in the chart

Do you notice anything interesting?

Can you generalize any rules?

What if I had a decagonal prism?

Decagonal pyramid?

Nets!

Predict what your nets will look like!

Fold, tape, explore!

Nets everywhere!

What will your net be?

Sorting

What is the same about the 3-dimensional figures in groups 2 and 4?

Compare the figures in group 3 with those in group 4.

How are the figures in group 1

different from those in group 4? Compare the figures in group 1

with the figures in group 3. Can you generalize some rules

about pyramids? Prisms?

Sorting in 5th grade

Figure Hunt!

I have 6 faces I have 4 faces that are longer than the

other 2 I have 8 vertices I have parallel edges and perpendicular

edges

Vocabulary in Context!

Vertices Edges Faces Parallel Prism Pyramid Penta Attributes Polyhedra Net Octagonal prism Hexagonal prism Pentagonal pyramid

Perpendicular Quad- Congruent Symmetry Cylinder 3-dimensional Base Triangular Rectangular Sphere Cones Surfaces

Think Math!

Teaching Without Talking

Saturday 9:30-10:30

Convention Center, Sagamore

www.thinkmath.edc.org

Visit the Think Math! display at

“School Specialty” in the vendor gallery