Norazly Nordin; Noor Nadhirah Rossli; Mohd Shawani Ahmad Sabri; Jasman Nurdin; Siti Syazwani Zulkuple. VALIDITY AND RELIABILITY OF THE SURVEY INSTRUMENT OF PRESCHOOL TEACHER’S LEVEL OF KNOWLEDGE SKILLS AND ATTITUDES ON 21ST-CENTURY PRESCHOOL EDUCATION. JOSSR 2023, 6.