# DepEd ALS Module 2: Playing with Missing X’s

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. Don’t forget to answer the Pre-assessment before moving on to the other activities included in the module.

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 – Combine or not to combine

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

• define polynomials;
• classify algebraic expressions which are polynomials according to degree and number of terms; and

Lesson 2 – Let’s Distribute and Share

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

• perform operations on polynomials;
• multiply and divide polynomials; and
• factor polynomials using methods of factoring.

Lesson 3 – Fraction of your X

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

Setting the Path illustrate rational algebraic expression;

• perform addition of rational algebraic expressions (both with the same and different denominators);
• perform subtraction of rational algebraic expressions (both with the same and different denominators); and
• represent real-life situations using rational algebraic expressions.

· amount of work done per unit

· speed per unit

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

UNESCO_ALS_LS3_MATH_M02

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