Daisy designs are due next block Thurs-Fri, October 4-5, 5 pts. On copy paper if possible, or on notebook paper: construct a daisy design (p 10 in textbook) and elaborate, then color.
Block 18 was all about the perpendicular bisector of a segments. Students also got to view their last unit test and find out about a possible re-take. Next time we will get new seats.
In all but 2nd period, a grade was taken over HW #11 (last unit review worksheet and book work) and HW #12 (p 152-3: 1-8).
Does everyone have a working compass? See me if you have difficulties.
We made up a definition for perpendicular bisector of a segment (as shown on p 155) - a line, segment or ray that passes through the midpoint of a line segment at a right angle.
Students recorded definitions for segment bisector, perpendicular bisector, median, and midsegment in their Geometric Truth (pp 155-7 in new book). MAKE GOOD SKETCHES. In this unit, the definitions drive the constructions, so they are important. Students also did p 59:12 as an investigation into C-6. If you can locate some points that are equidistant from the endpoints of a segment, then you have found the perpendicular bisector of the segment. We then used this as a launch into the perpendicular bisector construction. Can you find two points that are equidistant and connect them?
We also investigated C-5 on patty paper: If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
We went over the homework, dealing with questions, and then we practiced the new construction in a triangle.
Remember that you can see animations for any construction. Follow link in next post or in "resources". Of interest today: perpendicular bisector and median.
HW #13 - pp 157-9: 1-5, 8-9, 18-23
Quiz on Wed-Thurs next week - 22 pts. (on A day, the quiz is the only thing we do on Oct 10 - 20 minutes).
Block 18 was all about the perpendicular bisector of a segments. Students also got to view their last unit test and find out about a possible re-take. Next time we will get new seats.
In all but 2nd period, a grade was taken over HW #11 (last unit review worksheet and book work) and HW #12 (p 152-3: 1-8).
Does everyone have a working compass? See me if you have difficulties.
We made up a definition for perpendicular bisector of a segment (as shown on p 155) - a line, segment or ray that passes through the midpoint of a line segment at a right angle.
Students recorded definitions for segment bisector, perpendicular bisector, median, and midsegment in their Geometric Truth (pp 155-7 in new book). MAKE GOOD SKETCHES. In this unit, the definitions drive the constructions, so they are important. Students also did p 59:12 as an investigation into C-6. If you can locate some points that are equidistant from the endpoints of a segment, then you have found the perpendicular bisector of the segment. We then used this as a launch into the perpendicular bisector construction. Can you find two points that are equidistant and connect them?
We also investigated C-5 on patty paper: If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
We went over the homework, dealing with questions, and then we practiced the new construction in a triangle.
Remember that you can see animations for any construction. Follow link in next post or in "resources". Of interest today: perpendicular bisector and median.
HW #13 - pp 157-9: 1-5, 8-9, 18-23
Quiz on Wed-Thurs next week - 22 pts. (on A day, the quiz is the only thing we do on Oct 10 - 20 minutes).