W : Build on studentsâ knowledge of literary elements by explaining how to draw conclusions, including determining the theme, based on information in folklore. H : Engage students by using the story Goldilocks and the Three Bears to model how to draw conclusions based on text.
For a signal whose fundamental frequency is f, the second harmonic has a frequency 2 f, the third harmonic has a frequency of 3 f, and so on. Let w represent the wavelength of the signal or wave in a specified medium. The second harmonic has a wavelength of w /2, the third harmonic has a wavelength of w /3, and so on.
Watch the teams compete. For the given two quantities, 20 and 30, the number (20 + 30)/2 is known as their arithmetic mean while 2/(1/20 + 1/30) is the harmonic mean of the two numbers. We just observed that the arithmetic mean (the average) of two numbers 20 and 30 is not less than their harmonic mean.