Wednesday, 19 April 2017

Wednesday, April 19

In class: we worked on constructions and identifying the conditions for triangle congruence. For example, Can you tell why either 0 or 1 triangles are possible given any set of three side lengths?

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The side lengths from point A and B must meet at a point but if we let them swing, we will notice that the arc traced out by their endpoints only meet at one place (2 if we allow the reflection of this situation on the other side of segment AB)

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And so all triangles constructed from those three lengths will be congruent to the triangle below.

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Assignment: In class we started a packet "How many ways can you identify a unique triangle?" this is not homework. Students will have time to complete this in class tomorrow.

Tuesday, 18 April 2017

Tuesday, April 18

In class students worked on 7.3 Task + RSG also I worked with a group of students (who asked for more instruction) on various constructions

  • copy segment and angle
  • bisect segment and angle
  • construct a parallel line to a given line through a point not on the line
  • construct a perpendicular line at a point on a line or construct a perpendicular to a line given a point not on the line

Assignment: Complete 7.3 Task + RSG

Monday, 17 April 2017

Monday April 17th

Assignment: 7.2 Task +RSG.

Students need to know how to construct regular hexagon, equilateral triangle given a circle. Also, constructing parallelograms, parallel lines, copy segments and angles, and various problems involving shapes and construction… e.g. Given a segment AB, find all points C such that triangle ABC is an equilateral triangle.

Friday, 14 April 2017

Friday, April 14

In class we reviewed yesterday's homework, I handed back the Module 6 tests, and we worked on construction problems and angle relationships.

Assignment: Complete "Construction Problems 7.11" handout

Thursday, April 13

Wednesday's Assignment: 7.1 Task + RSG
Thursday's Assignment: Angles worksheets 2.5/2.6. Topic: angle names and relationships.

Extra help? As we study constructions, students will need to be able to complete a variety of constructions cleanly with compass and straight edge. If your student needs some extra help practicing constructions one nice resource is at math open ref. They have nice short animations of how to perform each construction and make it easier to practice.

Constructions game. Euclid the Game is another great way for students to practice/learn constructions.

Tuesday, 11 April 2017

Tuesday, April 11

In class we started Module 7, learned about compasses and geometric construction.

Materials. All students will need their own compass. They will need these everyday for the remainder of the unit. Not having a compass will make them unable to participate or complete assignments.

If your student needs a compass, as of 2:29pm today, Office Depot on Cedar Hills Blvd has 22 in stock. This is the model I recommend.

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Students need to take care to not break the metal tip off and not lose the plastic screw. If a metal tip breaks I can glue it back in fairly successfully. If they lose it, it can be replaced with the head of a nail.

Assignment: No HW, students should have completed the rhombus and square constructions in the 7.1 Task.

Monday, 10 April 2017

Monday, April 10

In class: Module 6 test.

Graded: Module 6 work. Students received their Module 6 Binder Check sheet back after the test with behavior scores for this unit. Feel free to check this with them this evening. Let me know if you have any questions.

Saturday, 8 April 2017

Thu/Fri Update

I postponed today's test until Monday so that students would have time to finish review problems and work in class today. Yesterday and today's assigbment was to complete a review packet.

We have the Module 6 test on Monday. : end

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Cedar Park Middle School · 11100 SW Park Way Rd · Portland, OR 97225 · USA

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Wednesday, 5 April 2017

Tuesday, 4 April 2017

Tue, Apr 4

Today's Assignment: 6.7 Task + RSG.

Reminder test on Friday students will need to be able to

  • Perform reflections, rotations and translations.
  • Identify sequence of transformations that map a given pre-image onto its image (play detective)
  • Solve transformation problems with and without coordinate points (equation of lines)
  • Use geometric vocabulary: chirality, orientation, preservation of angle measure/side length, n-fold reflection symmetry, n-fold rotational symmetry …
  • Find missing side lengths in right triangles
  • Answer questions about definitions and properties of triangles, quadrilaterals, and regular n-gons.