Went over homework as the warm up. Took an assessment on parallel lines and angle relationships. Unpacked the next section's assessment on pg 99. Found the exact center of a circle using the perpendicular bisector (method here)
Homework:
Watch and take notes on these two videos: (GPE-B5a)
point slope form review from Algebra I: https://www.youtube.com/watch?v=K_OI9LA54AA
writing equation of a line from 2 points: https://www.youtube.com/watch?v=XMJ72mtMn4Y
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Passed back assessments. Warm up dealing with proving lines parallel. Discussed videos from last night and worked through example on writing the equation of a line.. Examined parallel and perpendicular lines on the coordinate plane and practiced writing equations of them in a modeling task dealing with a skateboard ramp. Also looked at the dragon curve fractal (videos: one, two, gif ) [GPE-B5a] Lecture notes
Homework:
p.97: 3-10, 13-16 [GPE-B5a]
Resources
Parallel line slopes: https://www.youtube.com/watch?v=e8qG0bjt5Rs
Perpendicular line slopes: https://www.youtube.com/watch?v=h0SURLIImqk
Perpendicular slopes applet: http://mathopenref.com/coordperpendicular.html
(Sub was present)
Warm up reviewing angle pair terminology and how to prove lines parallel. Went over homework on parallel and perpendicular line slopes. Did investigative/real-world math activity involving the equation of a perpendicular bisector to find a location on a map equidistant to two cities (handout here, solutions here). Did this in pairs, exchanging papers and making comments on others' work. Then practiced in a classwork/homework assignment for the rest of class on the same skill.
Homework: finish worksheet (linked here) [GPE-B5a] Due Thurs/Fri of next week
Resources:
writing the equation of a perpendicular bisector example: https://www.youtube.com/watch?v=gxwuyY8gmV8
another example: https://www.youtube.com/watch?v=1n0OSCD6CxM
point slope form: http://mathopenref.com/coordequationps.html
slope intercept form: http://mathopenref.com/coordequation.html