Decimal - Divide Decimals by Integers - Presentation

The educational material provided focuses on teaching students how to divide decimals by integers, a crucial mathematical skill. The presentation is structured to enhance fluency and reasoning through a series of activities and visual aids such as place value charts and counters. Initially, students are encouraged to discuss how place value counters can aid in understanding the division of decimals. The first activity presents a hands-on approach where students use place value counters across ones, tenths, and hundredths to divide simple decimal numbers by integers. They complete sentences based on this visual method, reinforcing their understanding of the concept. For example, dividing 2.48 by 2 using grouping and sharing techniques is demonstrated, with the answer being 1.24.

Building on the initial exercise, the subsequent activity challenges students to apply the concept to more complex numbers. They are given various decimal numbers to divide by integers and must choose between grouping or sharing strategies to find the solutions. The place value chart is again utilised to visually represent the division process, and students are guided to solve problems such as dividing 7.55 by 5 or 8.16 by 3, with the answers being 1.51 and 2.72 respectively. The presentation also includes reasoning tasks, where students are asked to critique methods used in division, such as recognising that hundredths cannot be moved to the tenths column incorrectly. This encourages critical thinking and a deeper understanding of decimal division. In the final slides, independent work is encouraged, with students discussing the merits of grouping versus sharing and exploring the use of inverse operations to verify their answers, thus promoting a comprehensive grasp of dividing decimals by integers.