Lesson sung to the tune of "Twinkle Twinkle Little Star"

• The alphabet, in elementary school
• Something taught in a 101 class, so to speak
• Pre-K basics
• Basics to learn
• Rudimentary education
• Rudiments of a subject
• Some remedial work
• Simple skills
• Primer material

Wiktionary Word definitions in Wiktionary
n. 1 (ABC English) 2 (context plurale tantum English) letter, writing, especially as a skill. n. The alphabet, especially the English alphabet.