This landscape printable may be helpful in visually demonstrating how the units of time relate to each other, since there are a few new vocabulary words involved.
Please note that these are not done proportionally and do not involve the exact conversion factors. Instead, it simply uses font size and less than or greater than signs to show that one year is longer than one month, and so on.
Students can even use this template to make their own by hand or on the computer with fun colors and font sizes. This can then integrate art and technology with math. In some states, some of these standards can also involve social studies.