Users study a chart containing numbers 1 to 99 and look for trivial palindromes as well as double and triple iteration palindromes. The reverse and add technique is demonstrated.

In this interactive object, learners examine the structural-functional, social-conflict, and symbolic interaction analyses of recreation. A mind map and quiz questions are included.

The learner listens to and sees Chinese vocabulary words used to describe hobbies, sports, and other pastimes.

Learners examine OSHA's guidelines of what to include in a bloodborne pathogen exposure control plan for persons who work in general industry, health care, emergency medical services, law enforcement, education, recreation industries, or other occupations in which there is a potential for exposure to blood, blood products, bodily fluids, or human tissues.