Lesson objective: Apply comparing and ordering fractions in a real-world problem context.

This lesson provides an opportunity for students to apply their knowledge and understanding of comparing and ordering fractions to a real-life situation. Students are asked to find the missing ingredients from given clues.

Key Concept students will use:

- There are three possible relationships between two given numbers with the same unit of reference, a and b: a>b, a<b, or a=b.

Skills students will use:

- understand fractions as numbers (Grade 3, Unit 4)
- recognize equivalent fractions (Grade 3, Unit 10)
- compare fractions (Grade 3, Unit 11 and Grade 4, Unit 5)

Students engage in Mathematical Practice 4 (model with mathematics) as they create models to reason about the size of fractions and order the numbers.

**Key vocabulary: **

- denominator
- equivalent
- equal to
- greater than
- less than
- numerator