Alanna and Kevin put on their math hats when they enter the Stuff n’ Such Shop and find Uncle Norm attempting to teach the Inventonator about measuring. “The better it measures, the better the Inventonator will be at inventing ingenious, possible impossible inventions!” The kids decide to make it more fun for the Inventonator – by learning the correct measurements to build a baseball diamond in the Clubhouse backyard! Kevin visits someone who is “outstanding in his field” right now and will know how to help build a diamond from the ground up! This “yagotta see!”

The Gist: This episode is about using instruments such as trundle wheels and tape measures to determine accurate measures of the length and width (and perimeter) of 2D shapes; and using templates of square metres to compute a grid estimation of area for the same 2D shapes. It is also about comparing “sizes” by considering what matters most: perimeter or area given the particular context. In the curriculum, children are required to estimate, measure, and record the perimeter of two-dimensional shapes, through investigation using standard units. They also learn how to measure area using simple grids (counting the squares, e.g., the number of 1 m by 1 m squares).