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This textbook follows the follows the format in accordance with the given competencies in
the curriculum guide of the K to 12 program of the enhanced Basic Education Curriculum. This book
is composed of 7 chapters – Quadratic Equation, Quadratic Function, Variation, Radical Expressions,
Quadrilaterals, Similarity, and Trigonometry.

This book provides instructional activities that will elicit active involvement and cooperation
among the learners. The activities are intended to assist and guide the learners, apply and
experience mathematical concepts and skills in daily life situations. In this way, the learners will be
able to develop different skills and processes such as: 1) Knowing and Understanding; 2) Estimating,
Computing and Solving; 3) Visualizing and Modelling; 4) Representing and Communicating; 5)
Conjecturing, Reasoning, Proving and Decision-making; and 6) Applying and Connecting.

This book is divided into two parts – the first part composed of the lessons to be discussed
while the second part are the activities to be answered.

In this book, you will find at the beginning of the chapter the Overview of what is to be
discussed along the way. Each lesson has Objectives that are used as a guide on what is to be
achieved at the end of the lesson.

Every lesson is provided with a practical situation before a thorough discussion. Then, a
Concept Review to assess the learners to what extent they understand the lesson. The Keynotes
shows the generalization of the topic.

The workbook is the second half of this book. These are the Building Skills which comprises
of three different activities to build and enhance the learners’ mathematical skills. The exercises on
the Building Skills are the following:

• Do This is designed to test mental skills and can be answered easily by the students;
• Reasoning has questions that apply manipulative techniques they have learned from the
lessons; and
• Problem Solving requires deeper analysis on the part of the learners.

Teachers’ Guide

This book is infused with different teaching materials that will help the teachers in delivering
a more effective discussion of the lessons. It has a Teachers’ Manual as the teachers’ guide on the
execution of each lesson and the activities provided.

A PowerPoint Material presents the content of the book and can be used by the teachers as
a visual presentation during the discussion. Lastly, it also packages an application for the teacher
which is called “Math Worksheet Generator”, a freeware from Microsoft Education Labs, which can
help the teachers in making exams and quizzes for the students, especially the ones about solving
equations, by generating automatic math problems and an answer key provided on another sheet.

It is expected that various processes and concepts are fully understood and basic skills are
strengthened so that the learners will be prepared for higher Mathematics and the real world.

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iMath 9: K to 12 Curriculum Series iMath 9: K to 12 Curriculum Series