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How A Lock Works DLESE Reviewed Collection
Ships travelling between Lake Ontario and Lake Erie use the Welland Canal. Beginning with a conversation between characters Mathise, Geo, and Trig, they explain how a lock in the canal operates by gravity alone, without pumps. The characters use mathematics to solve problems such as how long the locks take to fill and how to express the volume and flow of water in more common terms (bathtubs of water per second). They also ask why the lower lock door is much larger and heavier than the upper one, a question which users can answer by watching the animation of the lock's operation.
Intended for grade levels:
  • Intermediate (3-5)
  • Middle (6-8)
Type of resource:
  • Visual:
    • Illustration - artistic
  • Text:
    • Ref. material
Subject:
  • Mathematics
  • Technology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright and Other Restrictions Information is Unknown
DLESE Catalog ID: DWEL-000-000-000-363
Educational standards:
  • National Science Education Standards (NSES):
    • K-4:
      • Unifying concepts and processes:
        • Evidence, models, and explanation
      • E - Science and technology:
        • Abilities of technological design
        • Understanding about sci. / tech.
    • 5-8:
      • Unifying concepts and processes:
        • Evidence, models, and explanation
      • E - Science and technology:
        • Understandings about sci. / tech.
  • National Geography Standards:
    • Environment and society:
      • How physical systems affect human systems
Related resources:
This resource is part of
Resource contact / Creator / Publisher:
Contact: Brock University