Went over translations and reflections handout assigned Thurs/Fri of last week in small groups and looked at solutions. See resources below for additional help with this. Learned about how to graph rotations about the origin in the coordinate plane by observing various patterns in the coordinates in 90, 180, and 270 counterclockwise rotations (here is the applet to play around with if you wish). Did a practice problem from the old handout (problem 1) involving a rotation to illustrate this skill. Then filled out the update form regarding the project.
Notes from board
Blank copy of rotations outline
Homework
#1-12 on this handout (blank copy) (ANSWERS)
fill out project update if you didn't during class: link
assessment is next class, will be similar to the last 2 handouts (study notes closely, know rules for reflections and rotation especially)
Resources
identifying type of rotation, developing coordinate rules: link
drawing figures based on rotations, using coordinate rules: link
alternate way of drawing rotations, not using rules: link
performing a reflection across non-axis lines (made by me!) link
identifying the line of reflection (made by me!) link
translating a figure on the coordinate plane: link
reflecting a figure across x or y axis: link
reflecting across various lines: link
basics of translation link
write a rule for a translation: link
Tuesday/Wednesday
Warm up showed the equivalency of a 180° rotation about the origin with a reflection about the x-axis followed by about the y-axis since both result in negating the original (x,y) coordinates. Went over the homework in small groups, then looked at an alternative way to do rotations about the origin by rotating the paper around and counting the movement. Took the assessment on these topics and then went to the computer lab to investigate transformation on a blank plane, play with transformation golf, and starting the Polygraph game of "guess who" but with math. Will continue these along with some art work on Thursday/Friday.
no notes from board today
Homework: watch and take notes on the video below: direct link
Warm up dealt was a test-prep multiple choice question dealing with a sequence of transformations (a reflection followed by a rotation). Passed back assessments and went over them in small groups. Learned about symmetry by analyzing certain shapes for rotational and reflection symmetry and calculating the angles of rotation needed to carry the figure onto itself. Looked at the tessellation art of M.C. Escher and some classes made their own tessellations or symmetrical art masterpieces on the computer.
Notes from board
Homework
work your project! (Assigned 10/16, due 11/6)
Project prompt + rubric
Example project