Tags » Geometry

'Twas the day before break...

My goal for my Geometry classes today was to be as mathematically productive as possible, given that it was the last day of classes before break. 593 more words



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I feel so ashamed for not knowing much about al-Biruni – the polymath who lived in the 11’th century. His name was brought to my attention by a newspaper article announcing the establishment of a new private university named Biruni University in Turkey. 216 more words


Calabi-Yau Manifolds and Moduli Stabilization

For better or worse, string theory dominates modern research in theoretical physics. Naively, you might expect a theory consisting of tiny strings to be pretty simple. 781 more words


Sorting Teams of Students

We have had students change teams on the first day of each unit this year. Which is something, as I’ve always hesitated to change up teams that are working well together in the past. 435 more words


The Diagonals of a Rectangle

CCSS-M.G-CO.C.11.Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals… 297 more words


Constructing Parallel Lines & Instructional Adjustments

Students constructed parallel lines using a Geometry page of a TI-Nspire document. As students work on any construction, we ask what segments, angles, arcs, and triangles are always congruent in the construction. 557 more words


The Diagonals of an Isosceles Trapezoid

It was the day before the test on Polygons, and so I thought that writing a proof and then giving feedback on another team’s proof might be helpful. 800 more words