Wednesday, November 28, 2018

Area and perimeter of a triangle

Another way to possibly introduce, or reinforce, the area of a triangle and perimeter could be to show this gif:

Ask, "What do you notice?  What do you wonder?".  After some discussion pose, if not already asked, the following questions:

  • When is the area the least/greatest?
  • When is the perimeter the least/greatest?

After some discussion show this gif.