Bridge

1
Bridge Geometry Everywhere
2
3D Modeling

• TABS software (making nets)
• Google Sketchup
• Tubes using newspapers
• Toothpicks with marshmallows / soaked peas
• Straws (making the joints with interlocks)
• JINX wood (making the joints with gussets)
• Box Constructions cardstock

3
Centre 2 Teacher-Led
4
3D Modeling
Box Constructions Use cardstock
5
Maximize It!
6
Clarifying the abstractness of Time

• Measured in the same way iterations of a known
  unit
• Iterations are identical intervals like
• pendulum swings
• tap dripping

7
Clarifying the abstractness of Time
Timely strategies

• Begin with the hour hand. ( 700 / 658 ) Build
  the language .
• Find / compose stories that use time.
• Hands dont move the same way the pattern must
  be revealed.)
• Check out garage sales break one of the hands
  off.
• Teach 5 minute intervals.
• Then move to the digital clock.

8
Geometry / Spatial Sense
Application
Measurement
Data Management
9
What's on your Radar Screen?
NASA FlyBy Math
10
Math4Teachers 5
On a map depicting congested airports, identify
and label as many of the visible centers as you
can.
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EXPLORE
Problem Solving logical reasoning and
brainstorming
1. Air traffic / ground controllers need to
safely move aircraft around an airport and
guide take-offs and landings. 2. They need to
be gifted in spatial reasoning of 3
dimensional space in order to do this safely. 3.
As a group, determine why this statement must be
true. 4. Make a community sketch that shows a top
/ birds-eye view of a modern airport
12
Distance 25 cm Speed 1.25 cm / min.
Distance 33 cm Speed 1.75 cm / min.
1 cm represents 4 km
Two planes are flying at the same altitude
on merging routes. Initial distances and speeds
from the point of intersection are shown above.
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Materials Paper Tape / Rulers / Markers / Chart
Paper
Tasks 1. For each plane, make a line model that
shows its position at each 30 second interval. 2.
Combine this data to make a graph.

• Questions
• Will the planes meet at the point of route
  intersection?
• If not, which will arrive first?
• How many seconds will it take the first plane to
  arrive
• at the intersection?
• At the time, how far away is the second plane?
• If a problem develops, what options does an
• air traffic controller have?

Quiet Fish Bowl
14
Bansho