NGSS · Grades K–2

K-2-ETS1-3 Compare test data from two designs for the same problem

Analyze data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of how each performs.

Why water teaches this standard well

Testing two simple water tools side by side, such as two cup-and-cloth filters or two rain catchers of different shapes, gives students real comparison data they can see in the collected water. It is the earliest version of the design testing that water engineers do at full scale.

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.

27 materials aligned to K-2-ETS1-3

Lesson plans

Grade 2 Lesson plan

Two Covers for the Ambledown Garden Tub: A Drying Test

A three-session grade 2 test of an open tub against a solid lid and a mesh cover, tracking water lines to find where a garden tub's stored water goes.

Science 3 sessions, ~45 min total Answer key

Kindergarten Lesson plan

A Sun Shade for the Honeycomb Park Bird Bath

A 40-minute kindergarten design lesson where students build two paper sun shades for pie-tin bird baths, compare how much water is left, and dictate an opinion.

Engineering & Design 40 min

Worksheets

Grade 2 Worksheet

Rockaway Pond's Muddy Water: A Filter Layer Worksheet

A grade 2 worksheet in which students compare test results from a cloth filter and a cloth-and-sand filter, subtract within 100, and pick the better design.

Engineering & Design 25 min Answer key

Math problem sets

Labs & experiments

Grade 2 Lab / experiment

Ivyford Pond's Cloudy Jar: Testing Two Strainers

Grade 2 groups describe a cloth and a screen by their properties, then pour cloudy pond-style water through each and compare which strainer catches more bits.

Science 45 min Answer key

Grade 2 Lab / experiment

Ashfield's Cold Pipe Wrap: A Grade 2 Insulation Test

A two-session grade 2 investigation comparing a paper towel wrap and a felt wrap on cups of ice, then refreezing the melted water to show the change reverses.

Engineering & Design 2 sessions, ~55 min total Answer key

Grade 2 Lab / experiment

Hard Ground or Grassy Ground? A Grade 2 Runoff Test

A grade 2 lab where students compare rainwater runoff collected from a foil-lined tray and a soil-filled tray to see which surface absorbs more water.

Science 45 min Answer key

Classroom activities

Grade 1 Classroom activity

Gravel Strip or Plant Strip at Marlberry Lane School

A grade 1 station activity where groups pour rain over a bare tray, a gravel strip, and a plant strip, then count spoonfuls of runoff to compare the two strips.

Science 45 min Answer key

Grade 2 Classroom activity

Crabapple Pond's Floating Boom: A Grade 2 Design Station

A 35-minute grade 2 station activity in which teams build floating booms from yarn, foil, and straws to corral floating litter in a tub and compare two designs.

Engineering & Design 35 min Answer key

Kindergarten Classroom activity

The Mossy Marsh Sponge Wall: Two Ways to Slow the Water

A 30-minute kindergarten tray activity where small groups test a sponge row against a block row to see which one slows the water running toward a paper town.

Engineering & Design 30 min Answer key

Kindergarten Classroom activity

Spoon or Straw: Two Watering Tools for the Bean Cups

A 30-minute kindergarten activity where groups test a spoon against a straw dropper on matching bean cups and choose the tool that waters without spilling.

Engineering & Design 30 min Answer key