1. The problem is to understand the concept of capacity suitable for grade 2 students. 2. Capacity is the amount of space inside a container that can be filled with something, like water or sand. 3. We use units like liters (L) or milliliters (mL) to measure capacity. 4. For example, a small cup might hold 1 liter of water, while a big bottle might hold 2 liters. 5. To compare capacities, we see which container can hold more or less. 6. If a container holds 2 liters and another holds 1 liter, the first one has a bigger capacity. 7. This helps us understand how much liquid or stuff a container can hold. 8. So, capacity is about how much space is inside something to hold things.