The student will be able to write and recognize shorthand formulas and combinations.
Students draw symbols of combinations.
Combination must have nut or bolt holding together by thread. By now most students do not need to actually put the nuts and bolts together but simply draw the combinations. Place nuts and bolts in separated stacks. Tell students each stack represents an element, i.e., carbon, oxygen, etc. Ask students to pick out one nut or bolt from a stack and this will represent an atom of that element.