This video is about Introducing a Number using Visual Cluster Cards and Cuisenaire Rods. We discussed in another video (The Parallels between learning Literacy and Numeracy), knowing the letters of the alphabet is a prerequisite to (a) learning sight words, (b) phonemic awareness, (c) word attack skills, and, ultimately, acquiring reading skills, Similarly, knowing one’s mathematics alphabet (The ten numerals/numbers: 1, 2, 3, 4, 5, 6, 7, 9, 9, and 10) is a prerequisite to number concept, numbersense, and ultimately, learning numeracy skills. In this video, we introduce the concept of number 5. Same lesson plan, as used in this video, can be used for other numbers. A sketch (essential steps, sequence, questioning, and the principles of pedagogy) of this lesson is available (free of cost) by sending an email to: mahesh@mathematicsforall.org. For the full treatment of teaching number concept watch the video: How to Teach Number Concept. Future videos will deal with numbersense and numeracy.