Place value - Rounding to the nearest 100 - Planning

In a Year 4 maths lesson focused on place value, students are introduced to the concept of rounding numbers to the nearest hundred. The lesson utilises a variety of resources such as Base 10 blocks, counters, number lines, and counting sticks to facilitate understanding. Students are encouraged to engage with key vocabulary, including terms like 'multiples', 'round up', 'round down', and 'place value', encompassing the ones, tens, hundreds, and thousands. They begin the session by revisiting their existing knowledge on rounding two and three-digit numbers, with the catchy mnemonic "5 or more rise the score, 4 or less give it a rest!" to determine when to round up or down. Partner discussions help to reinforce the understanding of what constitutes a multiple of 100 and how to identify them.

The class progresses through various activities, starting with identifying multiples of 100 and understanding their significance. Students then move on to practical exercises where they physically manipulate Base 10 equipment to visualise the hundreds before and after a given number, aiding in their comprehension of rounding. Through the use of number lines, they learn to determine which multiple of 100 a number is closest to, with a reminder to round up when the number is exactly in the middle. This knowledge is solidified with independent work on differentiated worksheets, catering to varying levels of mastery, from visualising the rounding concept with number lines to working with different representations of numbers. The lesson concludes with a reflective 'Give me five' plenary where students assess their understanding, the skills they've practised, and the key points to remember, ensuring they can confidently round numbers to the nearest hundred in different contexts.