This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson.
Each SLM is composed of different parts. Each part shall guide you step-by-step as you discover and understand the lesson prepared for you.
This module was written and intended for Grade 11 STEM students. It will help you to be accustomed to how index fossils (also known as guide fossils are used to define and identify subdivisions of geologic time scale. This module helps you to apply it in many different learning situations. The vocabulary level of students is the basis of the language used in this module. The lessons are arranged following the standard order and the sequence of the course.
The module is divided into three lessons namely:
- Lesson 1 – What is index fossils?
- Lesson 2 – History of Earth’s Life Forms
- Lesson 3 – How Index Fossils Help Define Geologic Time Scale?
After going through this module, you are expected to:
1. define what is index fossils or guide fossils and subdivisions of geologic time scale.
2. identify how index fossils are used to described subdivisions of geologic time scale.
3. explain why it is rare for an organism to be preserved as a fossil.
4. distinguish the difference between body fossils and trace fossils.
5. describe five types of fossilization and what a living fossil is.
6. value the importance of index fossils and give several examples.
7. explain how the fossil record shows us that species evolve over time.
8. describe the general development of Earth’s life forms over the last 540 million years.
Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task.
If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator.