Fractions - Calculate Fractions of a Quantity - Presentation

In the lesson focused on calculating fractions of a quantity, students are encouraged to revisit and strengthen their understanding of both unit and non-unit fractions. The lesson begins with a discussion to clarify what constitutes a unit fraction, which is a fraction with a numerator of one, and a non-unit fraction, which has a numerator greater than one. Students are asked to provide three examples of each to cement their comprehension. The fluency teaching slides guide the students through various activities where they apply their knowledge to practical scenarios, such as determining the fraction of a given number of oranges belonging to a character named Jeff. The exercises involve using counters and bar models to visually represent and calculate fractions of quantities, enhancing their grasp of the concept.

As the lesson advances, more complex scenarios are introduced in Activity 3, where students must calculate how much of a certain quantity remains after a fraction has been taken away. For instance, they determine how much water is left after Hannah spills a fraction of her 490 ml, or how much chocolate remains after Ty and Andreas consume certain fractions of theirs. The lesson also includes reasoning exercises where students evaluate true or false statements about fraction calculations, such as the correct method to find four ninths of a number. Finally, independent work challenges students to use bar models for calculating fractions of various quantities, fostering critical thinking and pattern recognition in their approach to solving fraction-related problems.