The Longhorn Science & Technology Grade 5 (rationalized edition) is a well-structured learner’s book designed in line with Kenya’s Competency-Based Curriculum (CBC). It covers key science and technology concepts through practical, hands-on activities that encourage learners to apply knowledge in real-life situations. The book emphasizes the development of core competencies, values, and critical thinking skills through student-friendly exercises, experiments, and assessments. Its layout is visually engaging, with clear illustrations to aid understanding. Despite being retired, the book remains a useful resource for revision and reference, and is still available in many bookshops and online stores. A complementary revision book is also available, helping learners review essential content in a simplified format.