This video explains how to use a proportion and a given scale factor to determine the height of a building and the height of 1 floor of the building.
This video defines different types of triangles.
This video explains two ways to determine what shape will balance a scale given 2 scales that balance.
This video explains how to determine which coin out of 6 identical coins is light using only 2 weighings on a balance scale.
This video goes over the names of and values of large numbers expressed as powers of ten using the short scale numbering system.
This video explains how to determine what shapes will balance a scale from given information.
This video explains how to plot given values on a logarithmic scale. The scale is in exponential form.