Welcome to this Module entitled Why Do I Need to Believe in Science? under Learning Strand 2 Scientific and Critical Thinking Skills of the ALS K to 12 Basic Education (BEC).

This module was designed to provide you with fun and meaningful opportunities for guided and independent learning at your own pace and time. You will be able to process the contents of the learning resource while being an active learner.

This is a list of all sources used in developing this module.

The following are some reminders in using this module:

1. Use the module with care. Do not put unnecessary mark/s on any part of the module. Use a separate sheet of paper in answering the exercises.

2. Donâ€™t forget to answer the Pre-assessment before moving on to the other activities included in the module.

3. Read the instruction carefully before doing each task.

4. Observe honesty and integrity in doing the tasks and checking your answers.

5. Finish the task at hand before proceeding to the next.

6. Return this module to your ALS Teacher/Instructional Manager/Learning Facilitator once you are through with it.

If you encounter any difficulty in answering the tasks in this module, do not hesitate to consult your ALS Teacher/Instructional Manager/Learning Facilitator. Always bear in mind that you are not alone.

We hope that through this material, you will experience meaningful learning and gain deep understanding of the relevant competencies. You can do it!

Lesson 1 – Summing It Up

At the end of this lesson, you will be able to:

- illustrate an arithmetic sequence;

- find the unknown term/s of arithmetic sequence;

- find the arithmetic series and other related unknown values; and

- find the arithmetic mean/s.

Lesson 2 – Multiply it continuously

At the end of this lesson, you will be able to:

- illustrate a geometric sequence;

- find the unknown terms of geometric sequence; and

- find the geometric series and other unknown values.

Lesson 3 – Applying sequences and series

At the end of this lesson, you will be able to:

- solve problems that involve arithmetic and geometric sequence/series; and

- express satisfaction in mastery of new ways of thinking through application of mathematics.

## ALS Accreditation and Equivalency Program: Junior High School Learning Strand 3 Mathematical and Problem-Solving Skills

UNESCO_ALS_LS3_MATH_M05-V1.4.1