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"Use Discovery Health's free target heart rate calculator to find out what your target heart rate is. Simply put in your gender, intensity level and age, and let Discovery Health's free target heart rate calculator work for you. Your Target Heart Rate, from 60 to 80 percent of the maximum your heart can beat, should be your goal three to five times a week for 20 to 60 minutes (excluding warm-ups) to maximize the health benefits of cardiovascular activity, including losing weight. People who exercise regularly do build up endurance, but they gain little additional value when their heart rate goes above 80 percent of their maximum. Besides the strain and injuries that can result, the heart is simply working too fast for any benefit, and your body cannot replenish oxygen that quickly. Similarly, regular exercise below the 60 percent mark has little sustainable impact - though for beginners, it's a good place to "

Categories:  Student Use, Teacher Use, Tutorials, Assessment Brief Description:  Their current solutions target the high-school age curriculum, including Math, Science, SAT, ACT and AP subjects.  Some of our products are free, and some are paid. For instance, Brightstorm Math and Brightstorm Science videos are free-these 2,500+ videos cover every topic in Algebra 1, Geometry, Algebra 2, Precalculus, Trigonometry, Calculus, Biology, Chemistry and Physics. Our paid products include great tools like Math Homework Checker and test preparation programs for the SAT, the ACT and several AP courses. Great teaching forms the core of these comprehensive programs, which also include practice quizzes, downloadable materials, full-length practice exams and more.

"TRAILS is a knowledge assessment with multiple-choice questions targeting a variety of information literacy skills based on sixth and ninth grade standards. This Web-based system was developed to provide an easily accessible and flexible tool for library media specialists and teachers to identify strengths and weaknesses in the information-seeking skills of their students. D"

"Reading science trade books is the perfect way for students to build literacy skills while learning science content. The books that appear in these lists were selected as outstanding children's science trade books. They were chosen by a book review panel appointed by the National Science Teachers Association (NSTA) and assembled in cooperation with the Children's Book Council (CBC). NSTA and CBC have joined forces on this bibliographic project since 1973, when the list was known as Outstanding Science Trade Books for Children and was primarily targeted at grades K through 8. Beginning in 2002, the list has been expanded to include high school as well. Now, we've updated the lists again, this time to include links to activities that complement each selection. And if you're looking for a list of the books, we now link directly to NSTA Recommends, where you can find a list of the last 10 year's worth of winners and generate an Excel file of your favorites. Learn more at NSTA Recommends."

"Join over 836,198 members who have lost weight using LIVESTRONG.COM's free Daily Plate application. "