Matthew, Cyril. “AN ASSESSMENT OF PUPILS’ ABILITY TO USE TWO BASIC SCIENCE PROCESS SKILLS (OBSERVATION AND CLASSIFICATION) AT BASIC SCIENCE AND TECHNOLOGY SCHOOL LEVEL”. Sokoto Educational Review 13, no. 1 (December 31, 2018): 1-351. Accessed December 9, 2022. https://sokedureview.org/index.php/SER/article/view/239.