1. The problem is to identify the appropriate strategy to teach multiplication of whole numbers by 3 in lower primary school. 2. Let's analyze each option: - a. Adding single digit numbers: This focuses on addition, not multiplication, so it is not the best strategy for teaching multiplication. - b. Shopping using currency coins: While this involves counting money, it may be too complex for introducing multiplication by 3. - c. Skip counting on a number line: Skip counting by 3s (3, 6, 9, 12, ...) directly relates to multiplication by 3 and helps children understand repeated addition. - d. Use of a place value chart: This is more suitable for understanding place values and larger numbers, not specifically multiplication by 3. - e. Place circular rings on an abacus: This can help visualize counting but may not specifically emphasize multiplication by 3. 3. Therefore, the most appropriate strategy is **c. Skip counting on a number line** because it helps children grasp the concept of multiplication as repeated addition in a simple and visual way. Final answer: c. Skip counting on a number line.