Multiplication and Division - Multiply 2-digits by 1 digit - Presentation

The lesson on multiplying two-digit numbers by one-digit numbers is designed to enhance students' fluency and reasoning skills in multiplication and division. The focus is on understanding the process of exchanging when multiplication leads to a number larger than nine in any given place value column. For instance, students are asked to multiply 13 by 3 using place value counters and the formal written method, also known as the column method. They learn to calculate each part of the equation separately—first multiplying the ones, then the tens—before combining them for the final answer. The lesson involves practical activities where students use visual aids and step-by-step instructions to solidify their comprehension of the multiplication process.

Further activities challenge students to apply their knowledge to a variety of problems, such as calculating the total number of drinks in multiple boxes or the total number of sweets in several bags. These real-world examples help students understand the practical applications of multiplication. They also learn to correct incorrect multiplications, reinforcing their problem-solving abilities and attention to detail. The lesson encourages discussion on multiplication strategies and the correct sequence of operations when using the column method. Reasoning tasks push students to consider when products will have a certain number of digits or whether a product will be odd or even, promoting deeper mathematical thinking and understanding of number properties.