deep thinking and real fun with vertices, edges, and faces tracy manousaridis, shelle crandell,...
TRANSCRIPT
DEEP THINKING AND REAL FUN WITH VERTICES, EDGES, AND FACES
Tracy Manousaridis, Shelle Crandell, Samantha Lowe and Kate Coleman
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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?
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?
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?
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