Maximum Score - 17 Points

What is looked for in this assessment is the ability of the student to: realize that cells are small, therefore a microscope is to be used; realize that a thin section of tissue is needed so that light can pass through; be able to prepare a wet mount slide; realize the need for a stain to observe the cells better; and be able to communicate the shape of the cells and their relationship to other cells by drawing.

• Allow 5 points if the student works independently with little or minor input from teacher.
• Allow 4 points if the student’s work was somewhat independent with minor input from teacher.
• Allow 3 points if the student’s work was somewhat independent with medium input from teacher.
• Allow 2 points if student’s work was dependent on major input from someone else.
• Allow 1 point if student’s work was dependent on someone else.
• No credit of the work was not done.

• Allow 5 points if proper techniques and procedures were clearly demonstrated.
• Allow 4 points if techniques and procedures were correct but showed minor faults (e.g. sample was sliced a little too thick, or not enough stain was placed on the sample, or slice did not have enough water on it, or correct power of the microscope was not used to demonstrate slide.)
• Allow 3 points if techniques and procedures were marginal, and showed major faults (e.g. sample was sliced too thick, or no stain was added to the sample, or sample was placed directly on dry slide), difficulty locating and focusing on cells.
• Allow 2 points if techniques and procedures were poor (e.g. compound faults such as a combination of those listed in the 3 point section).
• Allow 1 point if student was able to produce a usable slide, but only with the help of someone else.

• Allow 3 points if the slide shows excellent examples of stained cells.
• Allow 2 points if the slide showed cells, but individual cells were hard to see clearly.

• Allow 1 point if the slide showed tissue, but individual cells were obscure or could only be seen with difficulty. Student needed help in locating cells.

• No credit if no cells could be seen.

• Allow 4 points if the diagram is accurately drawn with properly labeled visible structures, and shows proper relation to other cells.
• Allow 3 points if the diagram is accurately drawn, but does not have all visible structures labeled clearly.
• Allow 2 points if the diagram is not accurately drawn (i.e. basic shape evident, but not accurate, cellular structures not clearly drawn), proper relation to other cells not accurate, visible structures are not labeled or nonvisible structures are drawn and labeled.
• Allow 1 point if the diagram is sloppy and shows little relation to actual cell, visible structures are not drawn in or are hastily done, no labels or mislabeling.
• No credit if the diagram is not drawn.