Lisa Shaffren

Biology I

Period 1

June 15, 2007

 

 

Approximate time: 50 minutes

 

 

Objective:

1) The student will construct a model cell. (3c)

2) The student will explain the structure and function of eukaryotic organelles in a presentation. (3c)

3) The student will create his or her own analogies to describe the structure and function of eukaryotic organelles. (3c)

 

 

Materials: Fruit the by the foot- two different colors, jellow, plastic bags, plastic container, raisins, some sort of medium round objects; some gems from the gem jar bags, glue, paper, markers (for making mitocondria), string (for cilia), rubric, directions sheet for lab, pre-made worksheet available for tomorrow’s evaluation.

 

 

Warm-up

 

Quiz

 

1) Which organelle is “The powerhouse of the cell?”

2) What is the function of the mitocondria?

3) What is the difference between the smooth and rough endoplasmic reticulum? Please give a difference in structure and a difference in function.

4) Which organelle is responsible for packaging proteins?

5) Name two organelles that may be used in locomotion (movement).

6) What is another word for a “suicide sac”, and what does it do?

7) Name two things that may be stored in a vacuole.

 

 

Set:

 

Give students three minutes to draw a model classroom or bedroom, labeling several different objects and what they are used for. Easy, right? You already know how to design something when you know the structure and function of object inside it. Today you will be designing and building a model cell.

 

 

Procedure.

 

1) Warm-up & set.

2) Split students into (two) groups of three. Tell students that they may use their notes. Present each group with their set of materials, and instruct students to build a model cell. (Pretty much just give them the materials and tell them to get started). Students must figure out how to represent each organelle. Where each group has constructed its cell, that group will share with the class. They will indicate how they built each organelle, and what its function is. This (the presentation) should be done without notes when possible. Presentation will be graded. Each person must present.

3) Monitor student work. When groups are getting near finished or if time gets short, give students a two or three minute warning.

4) Have groups share. Use a rubric to grade each presentation based on whether each person speaks, whether at least 2/3 of all major organelles are built and described, and whether or not structure and function were discussed for each organelles.

5) Clean-up

6) Hand out organelle analogies, and do one together. Indicate to the class that they should continue working on this sheet now and that it should be finished for homework. Analogies will be shared as part of the lesson tomorrow.

 

 

Closure:

 

Ask students what we did today. Repeat that we built a cell and the students explained the structure and function of eukaryotic organelles, and that they will be finishing their analogies for homework.

Indicate that tomorrow we will distinguish between plant and animals cells.

 

 

Assessment:

 

Informal: The teacher will observe (M) student participation in activities.

Formal: The student will give a graded (D) group presentation (M) in which (s)he explains the structure and function of organelles in a cell that (s)he has helped to build (C). The student will also take a graded (D) quiz (M) on the structure and function of organelles.