INTERNATIONAL KWEEN OF TRIGONOMETRY

Realmente os matemáticos são muito otimista com relação ao conhecimento, mas isso pode ser frustante para muitos estudantes, pois sem persistência não há como continuar nesse meio!

math problem: *begins with “we know that..”*

me: WE dont know SHIT

Puns are a SIN

Specimens of Fancy Turning

Public Domain Review covered this 19th century book of some pretty great spirograph images.

Sum of Triangular Numbers.

Desenho Geométrico não faz mal a ninguém!

#geometria #desenho geométrico #Prof Ulysses #ulyssestdb #professor Ulysses Bueno   

Essential mathematical GIFs that will make mathematics finally make sense

Yes, math textbooks are filled with boring, static blocks of text, numbers, and formulas. And nobody, especially students don’t like long…

Excelentes gifs

Plate 17. Guide to the construction of Gothic details. 1888.

Internet Archive

Pois eu tbm tenho a dúvida se a partir do dia 17/12/2018 isso será permitido no TumBRL???

Now it’s time to play “is this a contour plot too racy for Tumblr?”

Shearer’s geometry puzzles

On his blog MathWithBadDrawings, Ben Orlin reposted a couple of geometrical sangaku-like puzzles by math teacher Catriona Shearer. These are eleven of her personal favorites. If you dare, definitely give them a try!

Transit Across a Purple Sun. What’s the total shaded area?

Shearer’s Emerald. Four squares. What’s the shaded area?

The Pyramid with Two Tombs. Two squares inside an equilateral triangle. What’s the angle?

Setting Sun, Rising Moon. What fraction of the rectangle is shaded?

Hex Hex Six. Both hexagons are regular. How long is the pink line?

Four, Three, Two. What’s the area of this triangle?

The Trinity Quartet. All four triangles are equilateral. What fraction of the rectangle do they cover?

The Falling Domino. This design is made of three 2×1 rectangles. What fraction of it is shaded?

Slices in a Sector. The three colored sections here have the same area. What’s the total area of the square?

Disorientation. The right-angled triangle covers ¼ of the square. What fraction does the isosceles triangle cover?

Sunny Smile Up. What fraction of the circle is shaded?