Page 22 - Biology for Advanced Secondary Schools Teachers Guide Form Five

Biology for Advanced Level Secondary Schools

8. Use the general procedure for dissecting a cockroach,
demonstrate to students how to dissect the cockroach to display
the visceral.
9. Use Activities 3.13 and 3.14 from the Student’s Book to guide
FOR ONLINE READING ONLY
students to dissect a cockroach to display the digestive system
and reproductive system. Ask them to describe what they have
dissected.
Safety precautions

(a) Care should be taken when working with apparatus,
including dissection kit tools.
(b) The working area, equipment and instruments used must
be thoroughly cleaned and decontaminated after use, by
using appropriate methods.
(c) Good hygiene practices should be observed all the time;
hands should be kept away from the mouth, nose, eyes,
and face during and after dissection. Hands should be
thoroughly washed with soap or disinfectant immediately
after conducting a dissection practical session.
(d) All other safety laboratory rules should be observed; the
teacher or laboratory technician should guide the students.

10. Guide students to discuss in groups adaptation of Arthropods
to their environment and economic importance of Arthropods.
Give them time to present their work.
11. Guide students to discuss in groups distinctive features of
classes of phylum Chordata (class Chondrichthyes, class
Osteichthyes, class Amphibia, and class Mammalia). Give
them time to share their group work in the classroom.
12. Guide students to use internet sources or library to search
videos or images showing systems of a toad/frog (digestive,
urinogenital, venous, and nervous). Ask them to describe
digestive and reproductive system.

Form Five Teachers Guide
16