Learn how to draw lines and shapes accurately using a ruler. What is the perimeter? Discover how to work out the area of a 2D shape, by adding the length of its sides together. Perimeter on a grid ...

Among its findings are the measurements of nearly 15 million galaxies ... of matter by about 480 million light-years, as a standard ruler. “This separation scale is like a really gigantic ...

Ted gets to make a pizza for Dotty, but has his own ideas and decides not to use the measurements in the recipe. Things don't turn out as expected and he discovers why reading measurements ...