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Similarity (Day 6)

Learning Goal: Give students individual time to practice and solidify understanding of similarity and preview our upcoming right triangle unit.



Kaleidoscope #155

How often when we are comfortable, we begin to long for something new!
–Jacob Grimm 

Below is the original photo used to create this image. It’s of the Benjamin Franklin Bridge in Philadelphia, Pennsylvania, taken from my hotel window in December, 2017 while visiting family before Christmas.

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Beyond the Pale… Stuart France


Falsity of judgement is not necessarily objectionable.

Rather, we ask, ‘Does it advance life and species?’

The most false, like logical fictions, can be most indispensable…

Continue reading at Stuart France


Forty-seven more

Turns out you can do the same thing with 47 icosahedrons. The rhombic dodecahedron is clearer here.


Inscribed Right Angle Proof Without Words

Earlier this past week, I assigned the following problem to my 8th grade Geometry class for homework.  They had not explored the relationships between circles and inscribed angles, so I added dashed auxiliary segment AD as a hint. 215 more words


Kaleidoscope #154


There are as many worlds as there are kinds of days, and as an opal changes its colors and its fire to match the nature of a day, so do I.

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त्रिभुज (Triangle)

त्रिभुज (Triangle)

आज हम इस अध्याय में त्रिभुज और उसकी विभिन्न विशेषताओं के बारे में अध्ययन करेंगे। 

तीन भुजाओं से घिरी सरल बंद आकृति को त्रिभुज कहते है । 524 more words