MEASURING LENGTH IN CM & MM
https://docs.google.com/document/d/1RtDpuHaBRldwE-V0AYxAwmErzixBOflOCwt6DS1BKZg/edit
https://docs.google.com/document/d/1z0dAPv_A28ZdkTiFS1KyveGw8xVLLNXJFpbhYmSdR3s/edit#
METRIC SYSTEM VOCAB TERMS & DEFINITIONS
https://docs.google.com/document/d/1I_kVDSOax5z89l_I0ydXfNuzuCgMi3u7GPUf1KC13Jw/edit
