Mark Anthony Llego

Grade 9 Math Q1 Module 17 (M9AL-Ig-12) shows how to convert quadratic functions between general form and vertex form, with examples and answer keys.

Grade 9 Math Q1 Module 18 teaches how to graph quadratic functions: vertex form, vertex, axis of symmetry, worked examples, activities, and answer key.

Grade 9 Math Q1 Module 19 (Week 7): find the vertex, axis of symmetry, domain, range, intercepts, and opening of a parabola, with examples and answer key.

Grade 9 Math Q1 Module 20 (Week 8) shows how changing a, h, and k in y = a(x – h)² + k changes a parabola, with worked examples and an answer key.

Grade 9 Math Q1 Module 21 shows how to find the equation of a quadratic function from a table of values, with the second-difference test and worked examples.

Grade 9 Math Q1 Module 22 (M9AL-Ij-15.2): write a quadratic function’s equation from its graph, vertex, or zeros, with worked examples and activities.

Grade 9 Math Q1 Module 23 (Week 9, M9AL-Ii-j-2): solve real-life maximum and minimum problems using the vertex of a quadratic function.

Science 9 Quarter 1 Module 1 self-learning module on the respiratory and circulatory systems, breathing, blood flow, and how both work together.

Grade 9 Science Q1 Module 2 explains how smoking, diet, exercise, and hygiene affect the lungs and heart, with disease tables, activities, and answer key.

Grade 9 Science Q1 Module 3 on incomplete dominance, codominance, ABO blood types, sex-linked traits, and pedigrees, with activities and answer key.