Explanation of IU's IUs in the Original
Idea Units: Student 064
Student's Original Student'sAnalyzed

     Aluminum is an abundant (2) metal (1) that has many uses (3).
     Bauxite looks like clay (6) and contains several (8) other elements (9) including aluminum (7). Workmen use these other substances from bauxite to form others (10?). They first grind (11) the bauxite and put it into tanks (12). They use the other substance (1) to form mass (14). After (2) they remove the mass (15) they put it through several other processes (18) by (3) using filters (16).
     After that processes (1) it finally yields (19) into a powdery (20), white (21) chemical called alumina (22).
     Alumina is a mixture (23) that contains oxygen (25) and aluminum (24).
     Finally workmen seperate the aluminum from the oxygen (26) by using electricity (27). After this procsess (2) the final product is a metal (28) that is light (29) and luster (4, 30) and that looks silvery (32) and bright (31).
     Alumina is a metal that comes in many different forms (33).


Missing:
# 4 "It comes from bauxite."
# 5 "is an ore"
# 13 "Pressure is in the tanks."
# 17 "liquid remains"
Added IUs:
# 1 "After that processes"
# 2 "After this procsess"
Content errors:
# 1 "They use the other substance"
# 2 "After"
# 3 "by" [The other processes occur after the filters are used.]
# 4 [The metal is] "luster"