IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is a book by Heinrich Dorrie, ...

When you think back on elementary school math, do you have fond memories of the countless worksheets you completed on adding fractions or solving division problems? Probably not. Researchers and ...

The old-fashioned method of solving problems from a textbook was not getting the job done at Hanover-Horton Elementary School. So the school took a new approach to math education Wednesday — games.