David Walker
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Lesson 6-5: Congruent Figures (Day 65)
Today is the last of four days of subbing in the eighth grade Algebra I class. This week represents a major opportunity for me to practice teaching math to real live students. (It's just too bad for readers of this Geometry blog that it's an Algebra I class...
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Lesson 6-4: Miniature Golf and Billiards (Day 64)
Today is the third of four days of subbing in the eighth grade Algebra I class. This week represents a major opportunity for me to practice teaching math to real live students. (It's just too bad for readers of this Geometry blog that it's an Algebra I clas...
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Lesson 6-3: Rotations (Day 63)
Today is the second of four days of subbing in the eighth grade Algebra I class. That's right -- I find out today that the regular teacher will be out the entire week. Thus this week represents a major opportunity for me to practice teaching math to real li...
Lesson 6-3: Rotations (Day 63)
commoncoregeometry.blogspot.com
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Lesson 6-2: Translations (Day 62)
Today I subbed in an eighth grade Algebra I class. I've subbed before both at this school in general and in this class in particular, but neither since May. Here are a few things to note about this school: Like all middle schools in the district, this schoo...
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Lesson 6-1: Transformations (Day 61)
Today on her  Mathematics Calendar 2018 , Theoni Pappas writes: If a circle's diameter is 3 times another's, then how many times greater is its area? Let's call the diameters of the two circles d  and D , so that D  = 3 d.  Then the area of the smaller circ...
Lesson 6-1: Transformations (Day 61)
commoncoregeometry.blogspot.com
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Chapter 5 Test (Day 60)
Today I subbed in a high school history class. This is actually in my old district, the one that follows the blog calendar as Day 60. It's the end of the trimester -- at least, it would be if the high schools in this district actually had trimesters. (In my...
Chapter 5 Test (Day 60)
commoncoregeometry.blogspot.com
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Chapter 5 Review (Day 59)
Today on her  Mathematics Calendar 2018 , Theoni Pappas writes: If this circle's equation is x ^2 - 10 x  + y ^2 + 4 y  = 20, what is its radius? As I've mentioned in the past, I used to consider this to be an Algebra II problem, but the Common Core has pus...
Chapter 5 Review (Day 59)
commoncoregeometry.blogspot.com
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Chapter 5 Review (Day 58)
Today is the review for the Chapter 5 Test. This is what I wrote last year about the worksheet for today's review: There are many important concepts covered on this test -- isosceles triangles, quadrilaterals, and parallel lines. Here are the types of quest...
Chapter 5 Review (Day 58)
commoncoregeometry.blogspot.com