Metric conversions can be tough for students. These are a set of seven posters (kilometer, hectometer, dekameter, meters, decimeter, centimeter, and millimeter) - one set in color, the other in black and white.
Print, laminate and hang. These are a great reference for your students when they are tackling metric conversions.
I am a teacher, wife and mother. I have taught for over 20 years. I have taught pre-school, 9th grade, and pretty much every grade in between. For the past 11 years I have been lucky enough to be a 5th grade math focus teach who also gets to teach ELA. I started my blog http://quinnessentiallessons.blogspot.com/ back in 2013. I hope you will check it out.