Here is a structured 5th-grade lesson plan for introduction to fractions:

Objective: Students will identify, write, and model simple fractions using visual fraction strips.

Duration: 45 Minutes.

Standards Alignment: CCSS.MATH.CONTENT.5.NF.A.1

Materials Needed: Colored paper strips, scissors, and markers.

Activities:

1. Hook (5m): Fold a sheet of paper in halves and quarters to demonstrate partitioning.
2. Guided Practice (20m): Direct students to create fraction strips for 1/2, 1/3, 1/4, and 1/8.
3. Independent Practice (15m): Worksheets identifying shaded regions.
4. Exit Ticket (5m): Write the fraction that represents 3 shaded parts out of 8 total parts.