Students learned the 7 base units of SI and the natural phenomena upon which they are based; the prefixes of the base units in SI, their symbols, the numbers that they stand for; and what derived units are. They were reminded to learn the SI prefixes from tera - pico for a possible test. Once again, they were reminded to have their SCIENTIFIC CALCULATORS each day. They received a bronze grade (10 pt) for having their calculators today.