I’ll be honest; before I started teaching 5th grade, the behavior of light never crossed my mind. As a 5th grade teacher, though, I think about it ALL THE TIME! Reflection is the process by whichlight bounces offof a surface. When light hits a reflective surface, such as a mirror o...
However, often the topic is present in two (or even three) neighboring grades. Examples include: equivalent fractions (both 4th and 5th grade), percent (6th and 7th), factoring (4th and 5th). Some topics are "developed" to mastery over several grades, going from simple to more complex; ...