Visualizing Addition to 20 Using Base-10 Blocks

MatholiaChannel

This educational video demonstrates the process of adding numbers up to 20 without regrouping using the Concrete-Pictorial-Abstract (CPA) framework. Through clear animations, it guides students on how to solve the equation 14 + 4 by using virtual base-10 blocks placed on a place value chart alongside standard vertical written notation. The video explores key mathematical themes including place value (distinguishing between tens and ones), modeling numbers with manipulatives, and the step-by-step algorithm for column addition. It explicitly connects the physical act of combining 'ones' blocks to the abstract action of writing the sum in the ones column of an equation. For educators, this resource is an excellent visual aid for introducing or reinforcing early addition strategies. It supports visual learners by clearly separating the tens and ones columns and provides a model for how students can use physical manipulatives at their desks to solve similar problems. It serves as a perfect bridge between counting individual items and understanding the structure of two-digit addition.