Max Maths, Year 2, Learn together, Estimating numbers to 100

In a Max Maths lesson aimed at Year 2 pupils, the concept of estimation is introduced through a practical and engaging activity involving buttons. Han, a character in the lesson, wants to estimate the total number of buttons he has before counting them individually. To do this, he adopts Padma's strategy of first counting out a set of 10 buttons. By establishing this base group, Han is able to make his estimation process more manageable and systematic. He proceeds by grouping the buttons into sets of 10, a method that aligns with the foundational concept of counting in tens which is familiar to children at this stage of learning.

Through this exercise, Han demonstrates that by counting multiple groups of 10 buttons—specifically seven groups—he arrives at an estimated total of 70 buttons. The narrative reveals that the actual count of buttons is 74, showing that Han's estimation was quite accurate and only marginally different from the real number. This method of estimation not only simplifies the counting process but also reinforces the understanding of base-ten numeration. The dialogue between Han and another character encourages learners to see the value in estimation and to apply this technique themselves, fostering a collaborative and interactive learning environment.