Skip to content
LessonPrint

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

Next set

One paper per student

12345678910111213141516171819202122232425

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 sharp little chip of gravel, A flat dark gray slate tile, A handful of dry yellow sand

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 polished white marble egg, A bumpy brown rock from a field wall

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 spoonful of red desert sand, A lump of sandstone that feels like sandpaper, A shiny glassy piece of black obsidian

Rough to touchSmooth to touchMade of tiny loose grains

LessonPrint · 2-PS1-1 · Set 18 · free to copy for classroom use

Answer key — Sorting the Rock Tray

Set 18. Prints on its own sheet.

  1. 1.1. A flat dark gray slate tile — Smooth to touch 2. A handful of dry yellow sand — Made of tiny loose grains 3. A sharp little chip of gravel — Rough to touch
  2. 2.1. A bumpy brown rock from a field wall — Rough to touch 2. A pinch of fine gray clay powder — Made of tiny loose grains 3. A polished white marble egg — Smooth to touch
  3. 3.1. A lump of sandstone that feels like sandpaper — Rough to touch 2. A shiny glassy piece of black obsidian — Smooth to touch 3. A spoonful of red desert sand — Made of tiny loose grains

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