Dweck: A lot of parents or teachers say praise the effort, not the outcome. I say [that’s] wrong: Praise the effort that led to the outcome or learning progress; tie the praise to it. It’s not just effort, but strategy … theatlantic.com/education/arch…

Hvor god er du til å finne primtall? Avhengighetsskapende spill. isthisprime.com/game/

The scale of the Kármán line (edge of space) and low Earth orbit. Two coins model 100 km in height, while the stack of six coins models 400 km in height

The universe is a big place, perhaps the biggest.

The law of cosinesrelates the lengths of the sides of a triangle to the cosine of one of its angles. It generalizes the Pythagorean theorem, which holds only for right triangles buff.ly/2OWv2qF #MathMonday

David Didau @mfordhamhistory OK; but given that "off-the-shelf" maths lessons have been shown to improve student learning for all but the best teachers, then—in the short-term at least—not using them lowers student achievement for an uncertain benefit...

Study of the impacts of 1:1 devices in classrooms show increase in inequality, worsening math and language skills in children from low income families. On my reading list for the week. lnu.se/globalassets/f…

Always good to keep in mind that 1/2 + 1/4 + 1/8 + 1/16 + +1/32 + ⋯ = 1 bit.ly/2kBL0LN

Simpson's paradox [GIF]

Adolescent exposure to books boosts cognitive, numerical, and problem-solving skills in the long term. sciencedirect.com/science/articl…

THREAD. Here's my list of things that have worked. It is longer than I thought it would be. 1.Reading loads about the topics I’m teaching. 2.Planning and scripting explanations. 3.Learning names and using them. 4.Apologising if I get a name wrong or mispronounce it.

You can read the whole of Responsive Teaching here, free, until Sunday 22nd, readcube.com/articles/10.43…

“Mathematics has rarely seemed as vibrant and alive—and as thrilling—as it does in these pages. When the best writers explain the best mathematics, it’s a wonder to behold.” — Mathematician and author Steven Strogatz. Pre-order now! buff.ly/2Ck4ix2

How many?

Tom Sherrington (aka Tom Sherrington) has reorganised Rosenshine's ten strategies of his Principles of Instruction report into a more powerful four-stage lesson structure. Genius. Download a pdf from olicav.com/#/posters/

Why I'm Learning Less With Distance Learning Than I Do in School, by a student without the social capital to get published on the NYTimes op-ed page.

Recurring decimals went out of fashion in the 20s 🙃

Spennende!