Max Maths, Year 4, Learn together, Identifying fractions with a total of 1

In a Year 4 maths lesson focused on identifying fractions that add up to a total of 1, students are presented with practical scenarios to help them understand the concept. In the first scenario, Han needs 1 metre of ribbon but currently has only 2/7 metre. The problem posed to the students is to calculate how much more ribbon Han requires to reach the full metre. By exploring the different fractions that add up to 1 metre, students discover that Han needs an additional 5/7 metre of ribbon. This is demonstrated by the equation 2/7 + 5/7 = 7/7, which simplifies to 1, illustrating that the two fractions together make a whole.

The second scenario involves Toby, who has assembled 2/3 of a cake and needs to figure out what fraction is required to complete the cake. The students are guided to understand that Toby needs another 1/3 of the cake to finish it. This is further clarified by showing that 2/3 + 1/3 equals 3/3, which is equivalent to 1 whole cake. Through these examples, students learn to identify and work with fractions to make a total of 1, reinforcing their understanding of how fractions can be combined to make a whole and the importance of having a common denominator when adding fractions.