In The Overhead Projector: Don’t Overlook It (Part 1), I explained why it’s better to use a projector (be it an old-fashioned overhead or LCD) than to write on the board. Now we turn to how to ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

John McCain has frequently criticized Barack Obama for a $3 million earmark for an "overhead projector" for a planetarium in Chicago. Paul Knappenberger, president of Chicago's Adler Planetarium ...

After decades of studying outer space, the Adler Planetarium has been sucked into the orbit of presidential politics. Republican nominee John McCain criticized Democratic nominee Barack Obama in Tu… ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

A: Obama did seek a $3 million earmark, but it was not for the sort of ‘overhead projector’ commonly found in classrooms or offices. It would have replaced the Adler Planetarium’s projector ...

Interactive systems developed for schools combine a computer, LCD projector and handheld "clicker" devices. For these systems, each student has a multi-button clicker; the instructor creates ...