Average learning retention rates laid out by teaching method on the an adaption of the National Training Labs Learning Pyramid. A good reminder of the effect active learning can have on our students' learning process.
This pyramid shows the effectiveness of certain teaching methods and student retention. Lecture at the lowest, 5 percent retention and teaching others as the highest with 90%. No more lecturing students, they are only holding onto 5% of the lessons you teach! Include more student led instruction where students learn on their own and allow students to teach other students.
Students with dyslexia, like most students, learn best by doing. Does it make sense, then, that most school systems use the least effective teaching methods (lectures and reading) as their primary teaching methods?
Life Saver Bottle The remarkable Life Saver bottle has an affordable, portable carbon filter that can block any virus larger than 15 nanometers. What’s more, it can go through more than 1,500 gallons of water before the filter needs to be replaced. The bacteria and virus retention rate is 99.99 percent effective -it’s so thorough that it’s even supposed to clean up (gulp) fecal matter.