Simona Riva

Paper planes pilot. #GeoGebra applets designer. Math curricula planner and textbooks author.

[Simona Riva @simona_mathmum]

Each student plays his or her instrument, there's no point in arguing with that. The tricky part is knowing our musicians well enough to play in harmony. A good class isn't a military regiment marching to the same beat, but an orchestra working on the same symphony.
- D. Pennac

[Simona Riva @simona_mathmum]

@Simi_2210_ The skin.

[Simona Riva @simona_mathmum]

@WirisQuizzes

[Simona Riva @simona_mathmum]

@WirisQuizzes Assuming that the line slides and keeps being parallel to the right side of the triangle, and that the other one is perpendicular to it, the answer is x=1/3.

[Simona Riva @simona_mathmum]

@DidierBlessing @femalepencil I don’t know your source about outside the US, but everywhere phone plans are monthly 🙄 WhatsApp is widely used outside US because we travel more and need to communicate with foreign countries, send pics, video, audio, pdf…

[Simona Riva @simona_mathmum]

@SpaceByStorm @NASA This is teaching! Well done!

[Simona Riva @simona_mathmum]

@CircaDiem @JeremyWingert79 Favole al telefono is a collection of short novels, one of my favourite. I don’t know if the English translation is able to convey his style, it’s definitely not easy! Also Il libro degli errori is very nice

[Simona Riva @simona_mathmum]

@CircaDiem @JeremyWingert79 When my son was little, I used to read him something at bedtime, every day. Being Italian, Rodari was my first choice, then Dahl. We also loved to invent our own stories, bit by bit, starting from three characters called Pic, Pac and Buli.

[Simona Riva @simona_mathmum]

@shadows500 @emotions_ix 🤗 can’t do much more than posting this stupid emoji, I’m sorry.

[Simona Riva @simona_mathmum]

@WirisQuizzes (3+n)/(2n - 1)

[Simona Riva @simona_mathmum]

@CircaDiem @JeremyWingert79 I was going to suggest Roald Dahl, but I see that many of his books are already in this list…

[Simona Riva @simona_mathmum]

@ThrillaRilla369 I quit about 2 years ago.
Tough.
Sometimes I still miss a cig.

[Simona Riva @simona_mathmum]

@BhattiLaib9960 Gina

[Simona Riva @simona_mathmum]

@JamesAFurey The best way to work with multiple choice for maths is by asking to select the correct answer, then explain why the others are wrong. (Assuming that the other choices have been posed skillfully, knowing students typical errors and misunderstandings).

[Simona Riva @simona_mathmum]

@JamesAFurey Multiple choice for mathematics, if well formulated, can really test whether the student’s knowledge and/or skills are just superficial or deep. But designing these tests need subject expertise and competent use of distractors. Otherwise it’s just like a bet.

[Simona Riva @simona_mathmum]

@WirisQuizzes (B) by the fundam. Th. of algebra, this polyn (p) has max 4 real roots. Possible integer roots are the integer divisors of the constant term, -3, -1, 1 and 3. p(1)≠0, p(3)≠0,p(-1)=0,p(-3)≠0, hence for the reminder Th. the only real integer solution is x=-1

[Simona Riva @simona_mathmum]

@TolentinoTeach Naah. This is boring math. I was told exactly this today. “We want animations! “ Choo choo a funny train for high schoolers that are supposed to do deduction and abstraction instead… 🤷🏻‍♀️

[Simona Riva @simona_mathmum]

@ThrillaRilla369 Blade Runner

[Mathematica @mathemetica]

Terence Tao is answering a fundamental question regarding the safety and reliability of modern AI: "How can we use a tool that is powerful, but unreliable?"

W = ∑(wᵢ ⋅ xᵢ) + b

AI isn’t just about “smart”; it’s about the probability of *looking* right. We’ve built systems where the weights (wᵢ) are optimized for plausibility, not veracity.

This creates a “convincing mirror” that confidently serves dangerous advice in medicine or finance. The gap between “convincing” and “correct” is the most critical variable we need to solve for.

[Simona Riva @simona_mathmum]

@rastokke I fully agree with you, and currently doing the same! I still think, besides possible difficulties, that this is what everyone caring for the future of this generation of students should do, because a weak student today is a weak person tomorrow.

[Simona Riva @simona_mathmum]

The gardener's ellipse and circle - interactive activities with #geogebra
https://t.co/KvWFd7coAQ
https://t.co/4WV0b2BVZe