This resource focuses on advanced strategies for understanding and manipulating fractions. It includes six challenges designed to engage learners in critical thinking about various operations involving fractions, including addition, subtraction, multiplication, and division. Challenge 1 encourages error analysis in subtraction, prompting students to identify conceptual mistakes and apply regrouping strategies for the correct solution. Challenge 2 involves predicting the outcome of a multiplication problem and visualizing the solution using an area model. Challenge 3 asks learners to create word problems for division scenarios, highlighting the differences in 'pieces' and totals in each case. Subsequent challenges require multi-step problem solving for real-world applications, evaluations of different solution strategies, and the creation of visual models to deepen understanding of fraction operations. The resource aims to promote strategic thinking and justifications in the use of fractions across diverse mathematical contexts.