Pete Nelson    Biology I    Period I- The cell    Approximate time: 50 minutes

Objectives

The student will determine the sequence and processes of the steps of mitosis (Biology, 3.f)

Materials: Construction paper cut-outs, white board and markers, construction paper, tape, textbooks, pens or pencils.

Warm-up: List and define the different levels of organization in the body.

Set: What did we decide when we were thinking about how we grow? Rehash the set for DNA replication. Right, last time we talked about growth we were talking about DNA replication in the cell. Today we will be talking about the reason for DNA repication, cell division. By the end of the day you will be able to tell me each of the steps of mitosis and what is going on in each step.

Procedure:

1) Tell the students how things will be going in class today: you will be explaining each of the steps in words. You will hand out cut-outs of each step, and then using their notes (not the book) they will try to arrange the different cards in the correct order.

2) Begin class with an overhead summarizing the steps and vocabulary for mitosis. As you go along be sure to draw up an example of homologous chromosomes (sister chromatids, centromere, kinetochore)

3) Once you have finished the overhead, hand out the cards to the students. Explain that all the steps of interphase and mitosis are included. Also add that cytokinesis is added as well. (A total of eight cards)

4) Make an overhead of the sheets to go over with the class after they have made their predictions. Make sure to mention the cleavage furrow and mitotic spindles.

5) With the remaining time you can tell them that you want some student work in the room so have them draw the steps of mitosis and label them as well.

Closure:

Great job today. Review key words (kinetochore, interphase, steps of mitosis). So now you have an idea what is going on in your body all the time. Cells are going through this process in your body right now. Tomorrow we will be talking about a different kind of cell division, meiosis.

Assessment:

Objective: The student will determine the sequence and processes of the steps of mitosis (Biology, 3.f)

Informal- The teacher will observe student participation (M) in discussion and mitosis activities (C).

Formal- The student will draw and label (M) the steps of mitosis (C). The drawing will be graded and recorded (D) in the grade book.

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