Dr. DirtGarden science for kids & classrooms
🔬 Free for everyone

Dr. Dirt's
Microscope

Put a drop of soil on a slide and look! Find bacteria, fungi, protozoa and nematodes, count them like a real soil scientist and score your look out of 100.

🔬 Open the microscope

Dr. Dirt at his lab table with his laptop and microscope
At the microscope

What will you find?

  • Bacteria: tiny dots and rods that feed plants and hold soil crumbs together.
  • Fungi: long threads that carry water and food to plant roots.
  • Protozoa: busy swimmers that eat bacteria and leave plant food behind.
  • Nematodes: tiny worms. Most are the garden's helpers.

Grown-ups, good to know

  • Free to play in any web browser: tablet, Chromebook, phone or computer.
  • No sign-in and no ads.
  • Printable microscope labs with answer keys are on the printables page.
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