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Your next adventure · Grades 1–8

Count and balance to keep a harbor working

Bring mathematical thinking into a place you can change. Harbor Record uses counting and balancing as part of a connected learning world.

Harbor Record in the Lesson Worlds core game

Your free resource stays free. This preview shows Harbor Record, one destination in the core world. The introduction starts at the world’s entrance; follow its onboarding to explore the planets.

Start the free core-world introductionParent guide and membership

What you can explore

  1. Observe the harbor and its tools.
  2. Count and balance as you solve the local problem.
  3. Explain how your choices helped the harbor.

What membership adds

Continuing core-world access, saved progress, school-practice paths, and a parent dashboard. US$4.99/month covers up to three children. A parent creates the child profiles; no child email is needed.

See membership details
Count and balance to keep a harbor working | Lesson Worlds