This is a mental exercise that challenges your brain's working memory. The words are spoken (if you have computer sound on). To answer, click in the box and type. I read about it in an article by a researcher named Greg J. Siegle. I wanted to try the exercise, so I made this version in Scratch. (It's called the Adaptive Paced Auditory Serial Addition Test.) The variables keep track of how many are correct and how long it takes to answer.
