Provide hands-on activities for practice and mastery. Check for understanding of concepts and skills by using relevant standard materials, i.e. worksheets, text problems, workbooks, teacher prepared exercises, etc.

Students complete a worksheet, etc. in which the teacher conducts a "Cell Tour."

Objective: To confirm the students' ability to visually identify both drawings and electron micrographs of cell organelles; to check that they can verbally identify the organelles and match them with their unique and yet interrelated function in the cell; to have the students identify examples of protozoa, plant and animal cells under the microscope.

Activity: For this octant, students 1) complete a worksheet where they label the parts in a drawing of the cell, 2) take a quiz of simple matching columns for structure and function, 3) participate in a practice review in which the teacher conducts a "CELL CITY TOUR" (this is one of the highlights of the year. The teacher can get dressed up in a slicker, galoshes, umbrella and carry a picket sign that says 'CELL TOURS." She/he greets the students at the door and welcomes them into a cell. Tacked up around the room are simple, large, colorful drawings typically used to designate the difference organelles. Members of the "tour group" are invited to come up and describe in detail a random "site" on the tour), 4) look at microviewer slides of real cell organelles, 5) bring in samples of water, plants, etc. that they chose to look at under the microscope.

Assessment: Quality of student involvement in the activities: their success in labeling the diagram and matching structures and functions; their enthusiasm and accurate, active participation in the "Tour"; their ability to draw and identify organelles on the microviewer slides.