Never try to solve an angle or volume problem entirely in your head. Always sketch the shape and label the given dimensions.
He looked down at the textbook. Junior Secondary Mathematics in Action 1B . Who wrote this? The cover listed a panel of respected professors from the University of Hong Kong. Editors, advisors, consultants. But the formatting of this specific copy... it was a "Special Remedial Edition."
The 1B volume typically covers the second half of the Secondary 1 curriculum, focusing on geometry, algebra, and statistics: 培生香港 Chapter 8: Areas and Volumes (I) – Basic measurement of 2D shapes and 3D solids. Chapter 9: Congruence and Similarity – Identifying identical and scaled geometric shapes. Chapter 10: Introduction to Coordinates – Plotting points and understanding the Cartesian plane. Chapter 11: Angles related to Lines
The series is titled "Mathematics in Action" for a reason. Each chapter typically starts with worked examples. Don’t just read them—cover the solution and try to solve the problem yourself first. 2. Focus on Word Problems
The textbook uses a "Modular Binding" for 1B, allowing schools to teach chapters in a flexible order according to their teaching schedule.
: The Hong Kong Education Bureau provides free video lessons mapped directly to local mathematics topics.
Junior Secondary Mathematics in Action is a comprehensive textbook series tailored for Form 1 to Form 3 students (equivalent to Grades 7 to 9). Book 1B is specifically designed for the second half of the first year of secondary school.
Building on the basics from Volume 1A, this section deepens a student's understanding of algebraic expressions, the formulation of simple linear equations, and methods for solving one-unknown equations.
This highly practical unit applies mathematics to economic scenarios. Key concepts include: Converting between fractions, decimals, and percentages. Calculating percentage increases, decreases, and reversals. Understanding profit, loss, discount, and simple interest. 3. Geometry: Angles and Parallel Lines
Understanding basic shapes, angles (acute, obtuse, reflex), and the properties of lines.