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Investigate. Model. Explain.

Science lessons built by a teacher, for real classrooms.

Interactive science lessons that run right in the browser — no student accounts or student data required.

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  • Free to use
  • Runs in the browser
  • No student accounts or data

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Find the right path into science.

Browser-based science lessons are ready to use. Start with a topic.

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Scientific Skills

Practice observation, fair tests, evidence-based explanations, repeatable procedures, and lab safety.

Explore Scientific Skills

Cell Biology

Trace carbon through photosynthesis and follow DNA instructions into RNA and proteins.

Explore Cell Biology

A clear place to begin

Start with how science works.

Four free, interactive lessons build a shared classroom language for observing, testing, explaining, and repeating, plus a standalone lab-safety lesson.

View the full sequence
  1. Observation vs Inference
  2. Variables and Fair Tests
  3. Case Closed
  4. Repeat the Test
  5. Ready for the Lab

Teacher resources

Extend the free lesson onto the page.

Printable classroom materials for the free Ready for the Lab interactive lesson. Choose the focused companion worksheets or the complete teacher-led full lesson pack.

  • Visual Notes and a Standard Worksheet
  • Matching answer keys and teacher guidance
  • Recommended for grades 7–12
Explore the packs Open the free lesson
Ready for the Lab Full Lesson Pack preview showing the lesson deck and student worksheet
Ready for the Lab Companion Worksheet Pack cover showing the visual notes and standard worksheet

Ready for the Lab · Teacher resources

Teacher-created

Built for real classrooms

Free lessons

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Works anywhere

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