Tag Archives: geometry
Phi Project
So, as I explained yesterday, I decided to create a project centered around golden ratio, phi (φ) ≈ 1.6180339887, and the associated Fibonacci sequence 0,1,1,2,3,5,8,13,…. My classroom has computers, so I had students go back and forth between watching parts of Vi Hart’s videos … Continue reading
Golden Ratio
I can’t believe I’ve taught math for almost six years and not done much with the golden ratio, phi (φ) ≈ 1.6180339887, and the associated Fibonacci sequence 0,1,1,2,3,5,8,13,… (add the previous two numbers to get the next number, so 8+13=21 c0mes … Continue reading
Filed under math
Math is in the Air!
Math is in the air this week as we close in on that most special of mathematical holidays, pi day. Pi Day is only a week away, and I for one can’t wait! I’ve emailed our school secretary so pi … Continue reading
November in Geometry
Although this is my sixth year teaching, I’ve been struggling with classroom management issues this fall in my last-period Geometry class. So we haven’t been able to do some of the cool projects I talked about last year (click the Geometry … Continue reading
Day Before
Attendance was light today, as always on the day before a holiday like Thanksgiving or Christmas break. My eleventh grade engineering class was close to being there in full force [of those who are normally there], which I was proud … Continue reading
Filed under engineering, math, teaching
SBG Update
OK. I haven’t talked much about Standards-Based Grading (SBG) since last September. I’ve changed some things about how I implement SBG, which I shall describe here, along with how things went. Geometry, Fall 2010 Here’s how I set up my … Continue reading
The Pythagorean Theorem
Possibly the most famous theorem in all of mathematics. Over 300 distinct proofs of this theorem exist, including one discovered in 1876 by future president James Garfield. [Unfortunately, his mathematical prowess did not protect him from the assassin's bullet.] I … Continue reading
Regular Polyhedra
One short project I completed this month with my geometry students was a four-day look at regular (and irregular) polyhedra. First we built the five Platonic solids out of toothpicks and gumdrops, and learned their names: tetrahedron, cube, octahedron, dodecahedron, … Continue reading
Sierpinski Triangle on Display
Happy Day-After-Thanksgiving! Enjoy this picture of our completed Sierpinski Triangle, hanging up on display in my classroom.
Sierpinski Triangle Print
Yesterday, the art club finished the work begun by my geometry students, creating a large Sierpinski Triangle using printing techniques. Thus ends the collaborative art/geometry fractal project described here. See the results below. While contemplating the beauty of this fantastic … Continue reading
