Grade 2 Lesson plan
Estimating and Measuring Stonewell's Water Main: A Grade 2 Lesson
A 40-minute grade 2 lesson where students estimate, then measure with a yardstick, three taped pipe sections from Stonewell's water main, and add the lengths.
Common Core Math · Grade 2
2.MD.A.3 Estimate lengths in inches, feet, centimeters, and meters
Estimate lengths using units of inches, feet, centimeters, and meters.
Why water teaches this standard well
Before measuring, students estimate how many inches deep a puddle is or how many meters long a garden hose stretches, then check their estimate with a real tool. Estimating first builds the number sense operators use to sanity-check a meter reading before trusting it.
Materials tagged with this code are written to the full standard , and each carries a written note explaining the alignment. See how we review materials.
5 materials aligned to 2.MD.A.3
Lesson plans
Worksheets
Grade 2 Worksheet
Duskford's Water Walk: A Grade 2 Estimating Lengths Worksheet
A class walks past a hydrant, a meter lid, and a storm grate carrying no ruler, and students pick the sensible estimate and the right unit for each part.
Grade 2 Worksheet
Melt and Dry at Larchgate School: A Grade 2 Change Sheet
Grade 2 students follow ice and a puddle across a school week, choose inches or feet for each measurement, and decide which changes can be undone.
Math problem sets
Grade 2 Math problem set
Snow to Water at Frostpine Hollow: A Grade 2 Melting Depth Problem Set
Grade 2 students compare snow depth to melted water depth across three storms at Frostpine Hollow, adding and subtracting within 100 to measure this reversible change.
Classroom activities
Grade 2 Classroom activity
Wheelhouse Street's Straw Pipeline Build Challenge
A 40-minute grade 2 team challenge in which groups estimate, join, and measure straw pipelines to carry water 30 inches from a model tank to a house cup.