This week over 200 years ago, U.S. President John Adams allocated $5,000 for books for the U.S. Congress, establishing the Library of Congress. It now houses over 173 million volumes.

One of them is  Euclid’s “Elements.” The math textbook is second only to the Bible in the number of editions published (over one thousand) since its first printing in the 15th century, according to ExcelinEd.

Its content remains a critical foundation for modern-day math learning, and its geometric formulas are still used in physics, mechanics and astronomy.

Pages from several editions of “Elements” are now available for free in the Library of Congress’ online catalog. Share them with your students for a simultaneous math and history lesson.

There’s currently a legislative spotlight on K-12 reading in Wisconsin and around the country. But what about math?

While some states are considering K-12 math policies, as of now, that’s not on the docket for Wisconsin this legislative session.

But ExcelinEd has put together a comprehensive list of free math resources for all grades, from online teacher courses to at-home learning packets for the summer. Check it out on pages 6-7 here.