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Sorting the Rock Tray is a free printable Grade 2 science worksheet on classifying rocks and soils by how they look and feel, aligned to NGSS performance expectation 2-PS1-1. It prints 3 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 6 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Sorting the Rock Tray

2-PS1-1

NameDate

Sort each one into the right group.

1.Sort each one: Rough to touch or Smooth to touch or Made of tiny loose grains?

Sort: A spoonful of red desert sand, A flat dark gray slate tile, A jagged chunk of pink granite

Rough to touchSmooth to touchMade of tiny loose grains
2.Sort each one: Rough to touch or Smooth to touch or Made of tiny loose grains?

Sort: A pinch of fine gray clay powder, A sharp little chip of gravel, A small round pebble from a stream

Rough to touchSmooth to touchMade of tiny loose grains
3.Sort each one: Rough to touch or Smooth to touch or Made of tiny loose grains?

Sort: A bumpy brown rock from a field wall, A handful of dry yellow sand, A shiny glassy piece of black obsidian

Rough to touchSmooth to touchMade of tiny loose grains

LessonPrint · 2-PS1-1 · Set 6 · free to copy for classroom use

Answer key — Sorting the Rock Tray

Set 6. Prints on its own sheet.

  1. 1.1. A flat dark gray slate tile — Smooth to touch 2. A jagged chunk of pink granite — Rough to touch 3. A spoonful of red desert sand — Made of tiny loose grains
  2. 2.1. A pinch of fine gray clay powder — Made of tiny loose grains 2. A sharp little chip of gravel — Rough to touch 3. A small round pebble from a stream — Smooth to touch
  3. 3.1. A bumpy brown rock from a field wall — Rough to touch 2. A handful of dry yellow sand — Made of tiny loose grains 3. A shiny glassy piece of black obsidian — Smooth to touch

Last reviewed 2026-09-05. Aligned to 2-PS1-1 of the Next Generation Science Standards.