Learning biology can at times be like learning a
new language. There are so many new terms and definitions that
students often become overwhelmed. A "place mat" can be a fun
way of learning and categorizing these new terms and can be made either
by the teacher or as a student project.
Place mats can be found in diners throughout the country containing advertisements for local businesses in the area. An embryology place mat is a series of "advertisements" for various embryological terms. The students are entertained while they learn and can test themselves as well.
The students will be able to:
Notes to the Teacher: to top
No special materials or equipment are needed other
than a good biology text book, rulers, paper, and creativity.
If available, a computer can be used in the preparation of the place mat.
The students should be given a list of the new terms for the lesson.
In this particular lesson, the terms will be :
MITOSIS, MEIOSIS, CLEAVAGE, BLASTULA, GASTRULA, ECTODERM,
ENDODERM, MESODERM, EXTERNAL DEVELOPMENT,
INTERNAL DEVELOPMENT, FERTILIZATION, and ZYGOTE.
You have been hired as an advertising executive to create a place mat for the town of EMBRYOLOGY. The place mat will be used in the local diner and will have advertisements for some of the local businesses and events.
Your job is to list all the important definitions and/or terms and ideas related to each "business" or "event" and then to create a catchy advertisement to be used on the place mat.
Your biology text book and list of "businesses" and "events" provided by your teacher.
|BUSINESS OR EVENT||ADVERTISEMENT|
Equal nuclear division
Interphase, prophase, metaphase, anaphase, telophase
|MITOSIS, when just one of you is
simply not enough !!
We guarantee equal nuclear division with complete conservation of genetic material.
Diploid to haploid
2n - n
Separation of homologous pairs
Halving of the chromosome number
Occurs only in sex cells
Become half of your former self in only two cell divisions !!
Spermatogenesis and oogenesis are our specialties.
Mitotic cell division in the zygote
No cell growth
Continues until the cells of the embryo are reduced to the size of most of the cells of the adult organism
|1 - 2 - 4 - 8 ----
Subdivide your Zygote, that's your fate !!
Cell division without cell growth.
Hollow ball stage
Single layer of cells around a fluid filled cavity
|COME TO BLASTULA !!
a new lakeside community.
Tired of living too close to your neighbors ??
Embryo begins to grow in size
Join the migration. Gastrulation has begun !!
We're pushing in to new territory.
JOIN US !!
Fertilized egg cell
SPECIALIZING in 2n RESTORATION.
Outer cell layer of the gastrula
Differentiates into skin and nervous system
|We're on the outside looking in !!
We'll help you move on to careers in protection and regulation.
Inner cell layer of the gastrula
Differentiates into the lining of the digestive and respiratory systems as well as the liver and pancreas.
|ENDODERM...we are the floors and walls of the internal you.|
Third layer of the embryo
Forms between the ectoderm and the endoderm.
Differentiates into bone, muscle and blood.
For all your support and transport needs, CALL US.
Union of the egg cell nucleus with the sperm nucleus
Only one sperm gets in
Restoration of the diploid number
Internal fertilization--small numbers of eggs
External fertilization-large numbers of eggs
LIMIT: only one sperm per egg.
Special rates for large groups doing it outside!
Large quantities of eggs are produced
Water-molluscs, fish, amphibians
soft, gelatinous eggs
Land-insects, birds, reptiles
hard, external shells surround
|WE HAVE THE EGG FOR YOU !!
Hard or leathery model for those of you that need to conserve water. Complete with allantois for respiration and waste removal and storage.
Marsupials-no placenta, short period of internal development followed by period of external development within a pouch
|INTERNAL DEVELOPMENT from PLACENTAL CARE, LTD.
Free food and waste disposal.
For those marsupials that don't want to use our services, we provide and external pouch for your continued development.
Create place mats on other topics.
Create bumper stickers with themes on this topic.
Create book marks with themes on this topic.
Create posters with embryological themes.
Special thanks to Dr. Donald Cronkite, Academic Advisor
of the WWLPT 1997 BIOLOGY PROGRAM, for the place mat idea.