hour one feedback review angle hour two angles and lines project intro hour three check-ins bearing...
TRANSCRIPT
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Hour oneFeedbackReview
ANGLE
Hour twoANGLES and
LINES
Project intro Hour three
Check-insBearing angles
Agenda for today (7/22)
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Some themes…River, state-to-state travel, music, sleep
Persistent math issues
Persistent test issues (anxiety, etc.)
Issues with teachers
About you (9:00 class)
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Some themes…River, international travel, music
Persistent math issues
Persistent test issues
Issues with geometry
About you (1:00 class)
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Can I use an audio recorder?
Line: what is formula for slope?
Line: how do you solve for b? (Is there a formula for b?)
Line: what about slope to the left?
Your day one questions
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Plane: treat the scale as the amount between each hash mark (edge of each box)
Why not always use a scale of 1?
What can I do if I get done early?What kind of dog do you have?
More day one questions
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How many (line) segments are in a pyramid?
What is parallax?
Line: Is the y-intercept a point?
Are “axes” different from “axis”?
More day one questions
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Do you actually know the answers to the problem sets?
Can we use our notes on the tests?
Will we do proofs? (“please no”)
More day one questions
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“I work better listening to music”
“We had trouble using the order of operations” (exponents mentioned by another)
How old are you?
More day one questions
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Why do you teach math?
Can you determine how big the sun is using a coordinate plane?
What’s the best way to remember all this stuff?
More day one questions
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What have we covered, so far?
Plane Point
Line
Angle
Flat (2-D) Shapes
Solids (3-D)
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Having trouble with slope?Try using the slope formula:
(Complete the FIRST PROBLEM SET)
Line (continued)
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Is made by two lines, rays, or segments that meet (at the vertex)
Has size (measured in degrees)Is described using three points
New Topic: Angle
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Some exact sizes are named:Right (90o)
Straight (180o)
Angle (continued)
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'See any right angles?
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Some ranges of sizes are named:Acute (between 0o and 90o)
Obtuse (between 90o and 180o)
Angle (continued)
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Some combinations are named:Adjacent (two that share a ray)
Opposite (two that are across an intersection of lines)
Angle (continued)
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More combinations are named:Complementary (add up to 90o)
Supplementary (add up to 180o)
Angle (continued)
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Measure angles on paper using a protractor
Identify individual angles as right, straight, acute, or obtuse
Identify pairs of angles as adjacent, opposite, complementary, or supplementary
(Complete the SECOND PROBLEM SET)
Angle TASKS
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Some combinations are named:Perpendicular (meet at 90o)
Parallel (never meet, have same slope)
Topic: Angles and Lines
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A line that crosses or bridges two parallel lines is called a transversal
Angles and Lines
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'See any parallel lines?
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Are these lines parallel?
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When a transversal crosses parallel lines, there are many pairs of equal angles
Angles and Lines
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Corresponding angles
Angles and Lines
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Alternate interior angles
Angles and Lines
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Alternate exterior angles
Angles and Lines
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Identify perpendicular and parallel lines
Find missing angles’ sizes where parallel lines are crossed by a transversal
(Complete the THIRD PROBLEM SET)
Angles and LinesTASKS
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Complete the FOURTH PROBLEM SET
Complete the FIFTH PROBLEM SET
Show me when you’re done and I will check today’s assignment
Fill-in your check-in sheet for today
For the rest of the time…
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Activity: Bearing anglesN38oW = “north 38 degrees west” N
S
EW