Addition, Subtraction, Multiplication and Division - Formal multiplication 2-digits by 2-digits - Presentation

In a series of educational slides designed to teach multiplication of two-digit numbers by two-digit numbers, students are introduced to the column method of multiplication. The presentation begins by encouraging students to discuss and predict the steps involved in the process. The subsequent slides guide students through various multiplication problems, such as 23 times 45, and provide a structured approach to solving them using the column method. For example, students are shown how to multiply 26 by 13, breaking down the process into multiplying by the units first (26 times 3) and then by the tens (26 times 10), before combining the results to obtain the final answer.

The lesson continues with a series of multiplication exercises where students are prompted to use the column method to calculate products such as 35 times 21, 56 times 27, and 73 times 31. Each slide builds on the previous one, reinforcing the method and showing the step-by-step calculations, including the importance of place value and carrying over when necessary. The slides also include reasoning tasks where students must evaluate statements about multiplication and identify mistakes in given calculations, such as whether it's possible to make 999 by multiplying two two-digit numbers or identifying errors in a multiplication of 47 by 36. These activities aim to deepen understanding and encourage critical thinking about the multiplication process.