#mathstoday

#mathstoday

#mathstoday

Converting the books from LaTeX format to HTML5+JS+MathML is under way. With the aid of browsers translating capabilities, this will let you read the books in your preferred language. Take a look at the first chapters of First Principles of Math. openmath.online/books/fp/fp

#mathstoday

The Quadratic Formula/Function - Post 6. Solution in comments. Builds on previous posts on the subject. From the book Theoretical Mathematics. #matshtoday

The Quadratic Function - Post 5 Solution in comments. From the book Theoretical Mathematics 1 #mathstoday

The Quadratic Formula - Post 4 Solution in comments. From the book Theoretical Mathematics 1 For Problem 3, see Post 3 on the subject bsky.app/profile/open...

The Quadratic Formula - Post 3 Solution in comments. From the book Theoretical Mathematics 1

The Quadratic Formula - Post 2 Solution in comments. From the book Theoretical Mathematics 1 For Problem 1, see Post 1 on the subject bsky.app/profile/open... #mathstoday

The Quadratic Formula - Post 1 Solution in comments. From the book Theoretical Mathematics 1 #mathstoday

Another problem and solution inspired by @pippinsboss.bsky.social's post on the subject. This theorem is so beautiful.

Preliminary problem preparing proofs of van Aubel's theorem and Napoleon's theorem.

Adopting @pippinsboss.bsky.social's proof of Bottema's theorem to real vectors, we get a great problem for upper secundary education students.

Nå er Teoretisk matematikk 1 å få i papirform!

I dag gikk Teoretisk matematikk 1 i trykken!

A high school student sent us this neat problem on inverse functions. Thanks! The problem can be found in the book Theoretical math 1.

Noen lærere som vil kjøre et avsluttende prosjekt hvor man sammenligner bøkene fra OpenMathBooks med eksisterende læreverk? Det kan være det vanker et gratis klassesett med bøker etter endt prosjekt. Ta kontakt!

OpenMathBooks on Bluesky! Will try to reach out with some updates on the project now and then and of course post some cool problems from the books. Main web page (in Norwegian): openmath.online A little less maintained web page (in English): sindrsh.github.io/openmathbooks/