The multiplication chessboard is a fun teaching tool that helps lower grade students understand the principles of multiplication. It consists of chessboards labeled with numbers 1-10, colored chess pieces, and a multiplication mnemonic table. The multipliers are marked horizontally and vertically, and the cross grids represent the product results. In class, students place chess pieces at the intersection of corresponding numbers, visually see the result, and understand that 'multiplication is a simple operation of adding the same number'. Paired with a mnemonic table, this practice combines abstract multiplication formulas with concrete operations to reduce memory difficulty, cultivate numerical sense and logical thinking. It is a practical tool for early elementary school multiplication enlightenment, making multiplication learning more interesting.