Instructions
Estimating the Height of Trees
Let's say you hold your ruler up to this picture on your computer screen and measure Tyler and measure the tree. On the picture, Tyler is 2 cm and the tree is 10 cm. Now divide the tree height by Tyler's height: 10 divided by 2 equals 5.0. This means that the tree is 5.0 times taller than Tyler. So, if Tyler is 132 cm tall: 132cm x 5.0 = 660 cm Our estimate of the tree height is 660 cm tall! Wasn't that easy? 

