Place value - Tens and ones using addition - Presentation

Exploring the concept of tens and ones is an integral part of mastering addition, and this is precisely what the presentation titled "Tens and Ones Using Addition" aims to address. The lesson encourages students to think about how understanding the place value of tens and ones can facilitate the process of addition. Through a series of engaging activities, students are asked to complete part-whole models and write corresponding number sentences. For example, with the number 34, they would identify 30 as the tens and 4 as the ones, and then create four number sentences that reflect this breakdown, such as 30 + 4 = 34 and 4 + 30 = 34, reinforcing their understanding of place value in addition.

The presentation continues with more complex examples, such as the number 73, where students complete similar tasks by identifying 70 as the tens and 3 as the ones. This methodical approach helps to build a solid foundation in place value, which is crucial for performing accurate addition. The presentation also includes an activity that involves real-life application, asking students to calculate the total number of books owned by Leanna and Rosie, who have 20 and 19 books, respectively. Students are encouraged to represent their answers using concrete resources, part-whole models, and number sentences, further solidifying their understanding of tens and ones in the context of addition. Additionally, the presentation addresses common misconceptions and reasoning skills, asking students to correct mistakes and fill in missing numbers to complete patterns, thus promoting a deeper comprehension of the place value system.