Sign in Subscribe
Grade 2 Math Units

Unit Plan 31 (Grade 2 Math): Measurement Megamix—Lengths & Data

Measure to the nearest unit, add and subtract lengths on open number lines, create line plots, and write clear “how many more/less” comparisons to interpret class data.

Dr. Michael Kester-Haynes

• 6 min read
Unit Plan 31 (Grade 2 Math): Measurement Megamix—Lengths & Data

Focus: Collect length data; add/subtract lengths; build line plots and write comparative statements (“how many more/less”).

Grade Level: 2

Subject Area: Mathematics (Measurement & Data • Operations & Algebraic Thinking)

Total Unit Duration: 5 sessions (one week), 45–60 minutes per session

I. Introduction

This week students measure with rulers to the nearest whole unit, estimate and compare lengths, and solve add/subtract length problems using open number lines. They’ll collect class measurement data, create line plots (and quick bar/picture graphs), and report findings with clear comparative statements.

Essential Questions

  • How do I measure and record length precisely with a ruler?
  • When should I use an open number line, table, or graph to show my work?
  • How do line plots and bar graphs help me compare data and tell how many more/less?

II. Objectives and Standards

Learning Objectives — Students will be able to:

  1. Measure object lengths to the nearest whole inch/centimeter; estimate and compare lengths using standard units.
  2. Solve add/subtract length problems within 100 using drawings, equations, and open number lines.
  3. Generate a data set by measuring, then display with a line plot (whole-number scale) and bar/picture graph.
  4. Write clear comparative statements from graphs (e.g., “___ is 3 more than ___”).
  5. Communicate with labels/units, and explain strategy and reasonableness.

Standards Alignment — CCSS Grade 2 (focus this week)

  • 2.MD.1–4: Measure with rulers in standard units; estimate lengths; compare lengths.
  • 2.MD.5–6: Solve add/subtract length word problems and represent on number lines with equal units.
  • 2.MD.9–10: Generate measurement data; make line plots (whole-number scales) and picture/bar graphs; answer how many more/less.
  • Mathematical Practices: MP.5 (use appropriate tools strategically) featured; MP.1, MP.6 supported.

Success Criteria — Student Language

  • I can measure to the nearest whole unit and label with the correct unit.
  • I can add/subtract lengths and show my thinking on an open number line.
  • I can make a line plot and write a correct how many more/less statement.