Visualizing Addition to 20 with Regrouping and Base-10 Blocks

MatholiaChannel

This educational video provides a clear, visual demonstration of single-digit addition with regrouping using the problem 7 + 5. By utilizing a split-screen approach, the video simultaneously displays a physical model using base-10 blocks on a place value chart alongside the corresponding abstract numerical calculation on a notepad. This dual representation helps bridge the gap between concrete understanding and symbolic notation. The content focuses on the core mathematical concept of "making a ten" or regrouping. It methodically steps viewers through representing numbers with "ones" cubes, combining sets, and identifying when the ones column exceeds nine. The critical learning moment occurs when ten individual ones are grouped together, exchanged for a single "ten" rod, and physically moved to the tens column, visually explaining the "carry over" process often taught in standard algorithms. This video is an excellent resource for early elementary classrooms introducing place value and addition strategies. It is particularly useful for visual learners who struggle with the abstract concept of carrying numbers. Teachers can use this video to introduce the topic of regrouping, reinforce the relationship between ones and tens, or as a remediation tool for students needing a concrete refresher on how the base-10 system functions.