Students build fluency subtracting fractions from whole numbers using dynamic interactive flashcards, with number line models supporting each problem. Learners flip through cards to practice subtraction problems, reinforcing procedural fluency alongside conceptual understanding. This activity supports TEKS 4.3.E (subtract fractions) and aligns with Common Core 4.NF.B.3.
Skills: fraction subtraction, number line modeling, computation fluency, number sense. Grades 4-9.