|
Mitosis
|
| Subject
Area |
Mitosis |
| Age
or Grade |
7th Grade |
| Mass DOE Content Standard |
Recognize that hereditary information is contained in genes located in the chromosomes of each cell. A human cell contains about 30,000 different genes on 23 different chromosomes. |
| Prerequisite
knowledge/skills |
Student
will be familiar with part of the cell (ie nucleus, DNA) and realize
cells must reproduce. |
| Description
of New Content |
Students
will understand cells reproduce by making copies of their DNA and
dividing in a series of steps. |
| Goals |
Students
will make models of mitosis in groups and be able to explain the
stages of mitosis and to the rest of the class |
| Materials
Needed |
Pipe
cleaners, paper, pompoms, yarn, other small arts and crafts supplies
(Allow
students to be creative!), text book for reference |
|
Procedure
|
Each group will consist of six students. Each student will be reponsible fo building the model for a single stage of mitosis. Groups can be larger or smaller depending on the skill leve of your class. As a groups students must decide what materials will represent chromosomes, cetrioles, fibers, and uncondensed DNA and this must remain consisent thoughout all the stages. These stages must be represented: Before
(Interphase)
Student will be allowed to look at their books while building their
models but will be encouraged to try and explain their model by using
their teammates for help instead of the book.Phase 1 (Prophase) Phase 2 (Metaphase) Phase 3 (Anaphase) Phase 4 (Telophase) After (Cytokinesis/Interphase) |
| Evaluation |
Student will be asked to explain their model orally as a team. Each student should be responsible for their piece of the model but may receive help from their teammates. |
| Extensions |
Students may find other ways of explaining mitosis such as making a movie or acting it out as a class. The following questions may provide a basis for dicussion: What happens with the other
organelles in the cell?
What happens if a cell make a mistake in mitosis? How is this related to meiosis? |
| References | Holt
Science and Technology Short Courses:
Cells, Heredity, and Classification. Chapter 2: The Cell in Action Outside site: Animation of mitosis |