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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Cells Under the Microscope

Science · Organisms & Life Processes · conceptual

Understand that all living organisms are made of cells and use a light microscope to observe, interpret, and record cell structure

What mastery looks like

  • States that all living things are made of cells
  • Prepares or examines a slide of cells (e.g. onion skin, cheek cells) under a microscope
  • Draws and labels a diagram of cells observed
  • Identifies nucleus, cytoplasm, and cell membrane in a microscope image

Check your understanding

If Cells Under the Microscope prepared a slide of onion skin and looked at it through a school microscope, could they identify what they were seeing and explain that all living things are made of these tiny units?

Prerequisites

None — this is a foundational concept.

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